Being friends with gay people

So I have a question that’s been really worrying me. I am friends with a boy who is gay (and non-muslim since I live in a non-muslim country) and I feel really bad about this sometimes. I also feel like I am committing a major sin or even kufr whenever I like his posts since he posts with his boyfriend and I don’t wanna promote homosexuality but I’m just liking his posts because we’re friends. Can anybody give me advice? Am I a disbeliever for doing this?