Not for the homophobic, though, as the main relationship is not the straightest thing you'll ever see.
It is also a porn game, with occasional nudity and a couple sex scenes (all more-or-less straight), so you'll have to be okay with that.
Make sure to leave the adult scenes on, at worst they're funny filler, at their best I can't imagine the story without them.
Lots of people dig this, and honestly I see the appeal, but I can't agree that it's superbly written, or anything.
Hong fire has instructions on how to play various Japanese dating visual novels in English. They aren't exactly dating sims either but since you said you're fine with VNs, I'm throwing them out there.
If you play YMK, don't start with Aeka's route.edit: Added a link to the RE: Alistair site. Princess Waltz is pretty awesome in terms of story and characters, but it doesn't have much in the way of player input (outside of its surprisingly fun card-based battle system).
The way the mesh the genres just enough while still retaining their separate flavor is impressive. You can also look around in the OELVN community, on the Ren'py site I think, for some free dating sims.
Alice no Kuni, the natsume princess game fr the ds, tomeki memorial, And I suppose catherine might apply. I recall there being a pretty fun one called RE: Alistair but you play as a girl so that might not be what you're looking for. , Yume Miru Kusuri (these last two contain pornographic material) are good too, but they're commercial releases.
They start with manic pixie dream girl, but it rapidly becomes almost a deconstruction of that archetype. Persona 4 is basically two games, a dating sim in the real world, and a fantastic jrpg in the tv world.Katawa Shoujo is surprisingly well written and well put together.One of the only choose your own adventure style games I have actually gone through multiple times.While not all the stories are brilliant, Rin & Emi's stories both do things I've never seen done in the genre, going places I would expect to see only in a quite good movie or book.Rin's in particular has some simply amazingly powerful scenes.