I don't know, KatG, there's a lot of prejudice out there against romance writing.
It's the same sort of prejudice that is leveled towards SFF writers, coupled with a lot of dislike at something that is supposed to be very feminine, and therefore, not very interesting or good thereby.
Just so you know, some of my best friends are romance writers.
Then you should be well aware that bosoms play a very small role in romance fiction.

The idea that all romance novels are full of lots and lots of sex is, factually, wrong. Romance novels are character studies, very focused ones and very psychological. I've long asserted that romance writers are the ones to read to study character specifically because they spend more time inside the characters' heads, male and female, than almost anyone else and because they are focused on emotional trauma and relationship obstacles. Whether a comic or tragic romance, romance writers set up situations in which two people are dealing with difficult circumstances and in the process of that, move towards each other (and sometimes away again, sometimes permanently.) Since this is also the case with other types of stories with character relationships, romance stories serve as useful mirrors.
Category romance stories for specific imprints (the short ones,) have more set structures because they are like short stories for magazines -- within a range, they are writing for the theme of the imprint and they have a length limit. They are a different sort of fiction than most types of novels. But the point of the story remains the same -- a character study of two people facing difficult circumstances who move towards each other. Nearly every conversation I've had editing romance writers from historical to comic to category contemporary has been about psychological issues such as neglectful parents who left a person scarred, not swooning. It's not really a different kind of editing.
So what if it has a dependable market and garners a writer a throng of devoted fans always hungry for the next book.
It doesn't. Romance writers have been suffering in the same way that other writers have, especially since the Great Paperback Depression of the wholesale market in the 1990's which was critical for romance writers. Category romance has greatly decreased, with fewer sales per title. E-books has helped, but established mid-list romance authors are under the same pressures as SFF mid-list authors. Romance writers in general fiction and women's fiction, which includes some romance and comic romance, also have no guarantee of a dependable market or a throng of fans. They have the same pyramid structure on sales as the rest of fiction. Paranormal romance became a very nice opportunity for a lot of writers, but it also has a pyramid structure for authors and sales. "Gay romance" remains a niche market, same as it was in the 1980's. (So does soft porn, which is different from the romance market and mostly involves publishers who don't do other sorts of fiction, although the big publishers all do some small amount of erotica.)
Part of me thinks that if romance were less…romantic, then people would tolerate it—we just don't want it jammed down our throat, you know?
Romance stories vary a great deal in the amount of romance. A category romance has more romance because it's a shorter length and must be more concentrated. A historical romance actually has less because it's usually longer, even if it's a Regency, and into showing the historical period in which the story is set with sub-plots. A coming of age romance story will be split about equally between romantic issues and friendship/family/coming of age into adult identity issues. It's just assumed that romance novels are all the same, just as it is assumed that all SF or fantasy novels are all the same (and about sex.)
If you talk to people about romance plots in romance or other stories written by men versus women written non-romance stories, there is definitely an attempt to minimize the idea that romance and men are involved. The continual attempts to insist that the romance is not critical, important, paid much attention to in the male books, the male character is not gushy, etc., whereas that romance is a central thing for female writers doing say a mystery, is part of the social concept we have that romance is a female interest and goal, an expression of female id, that a sex scene is always more important to a woman writer and reader then a male one, and that therefore it is discomforting and of less value and definitely not to be attached to a male (unless the male is doing a category romance with an imprint in which case you can't get out of it.) So there's a social viewpoint of romance fiction that doesn't really match actual romance fiction, in my view, and means that authors often don't end up studying romantic sub-plots in other books effectively.
I do think if you don't want to read a story that is focused on a love relationship, then no one should certainly have to read romance. But as writers looking at character psychology and character pov, romance writing can be quite useful for us, even if the characters we're writing about are not going to be involved in any romance. The dynamics of a romantic interaction between two people beyond the sex part are not particularly different from the dynamics of two people in a work situation, a family situation, a threat situation, etc. The emotions will be different, obviously, but the set-up of analysis of body cues, dialogue, conflict, etc., is often pretty much the same.
None of the books I've suggested so far have been romance ones, though.
Some others:
Ash by Melinda Lo, which is a YA retelling of Cinderella with Asian aspects and lesbianism. (So sort of a romance, coming of age style but more focused on playing with the fairy tale itself.)
China Mountain Zhang by Maureen McHugh -- this would be a really good one for you to read, because Maureen is brilliant at character. It's a SF novel and the main character is a gay male.
The YA series Dangerous Angels by Francesca Lia Block has a mix of straight and gay main characters.
Steven Harper's SF Silent Empire series has a gay male protagonist.
Dryland's End by Felice Picano -- an older one.
SF NARC series by Mel Keegan features a gay male couple as leads who captain a cop starship, also the novel Aquamarine by the author.
Jim Grimsley has written a number of acclaimed SFF novels featuring gay leads and characters, and Kirith Kirin is a famous one of his.
Diane Duane's Tale of the Five series (I believe that one's YA.) She's a good writer.
Lynn Flewelling's Nightrunner series is one of the more famous ones.
Jarius Raphel's Legend of a Ninja series has a gay male lead.
Lois McMaster Bujold focused on a gay male lead in one of the novels set in her SF universe, Ethan of Athos.
Walter Jon Williams' SF novel Aristoi has gay male leads and features people able to split their identities for thought purposes and biological make-up, so that one might be very useful for looking at different ways to do characters re thinking process.
And then of course there is Ursula LeGuin's Left Hand of Darkness, which is just worth reading in any case, and is not involving homosexuality specifically but does look at the different ways you can do gender. James Alan Gardner's SF novel Commitment Hour, which takes place in his League of Peoples universe, might also be helpful in that way.