Wiggles onto here I highly recommend
No.6 and
Yuri!!! On Ice if you're looking for healthy gay relationships that are represented well!! Yuri on Ice is my favorite anime right now. The No.6
novels in particular are very very good and expound a lot more on the main character's feelings and inner monologue.
No.6 -
dub //
subYOI -
dub //
sub(No.6 dub is bad but your milage may vary, and YOI dub is excellent)
Doukyuusei is also a very nice little BL movie that is sfw but has a really nice love story. The manga goes a lot further into their relationship, from what I've heard, though I haven't read it myself. I can't find a link to the movie because Kissanime is down but hopefully you can find it somewhere!
The OVA
Winter Cicada is kinda weird and very stereotypically yaoi-ish (it's nsfw too so watch out) but I actually enjoyed the story and the romance to a certain extent? It's about warring factions when Japan was broken up into different areas, age of samurai and such. You might like it, idk. See above--since kissanime is down I have no idea where you'd watch this whoops.
Nabari No Ou has a bit of BL tones in it, too! It's much more, like,, pure, though. The characters are children. But it's very sweet and I like it a lot, and it's more story and adventure based than romance based.
Nabari -
sub //
dub(for the love of everything please watch the sub the dub makes me cringe)
Dramatical Murder is a bit of a guilty pleasure for me ahah, the Kojaku, Clear, and Noiz lines are my favorites. Mostly the former two. Virus/Trip and Mink creep me out sobs. I even have
cosplay pets of Aoba and Sei pfft.
Can also confirm that Free! is not BL at all. Not even in the slightest. It's like all of the characters are these sexless beings who have no personal space though, so if you don't mind imagining your subtext, go for it. xD I did like it--MakoHaru is one of my OTPs (do folks still call it that these days) and their interaction is lovely, friendship or more than friendship. I dunno. Free! is just kind of a feel-good slice of life anime, haha.