I dont know why all gay romantic movies end up with sad endings. There's another "romantic" movie where one of them ends up killing the other with a knife and running away because he was afraid of homosexuality.
For this one, even though someone already told me it had a happy ending, i was still thinking they were not going to end up together
The bury your gays trope does seem to be dying out now and there are more and more positive/normal representations but you can still catch it. Brokeback Mountain was a classic example of it, but that's quite old now.