Bf issues help I need some advice

Lately my bf has been so different, we rarely have sex anymore (he'd rather watch porn or look at models and Jack off) he has been getting snippy with me for like everything even when I'm just trying to be funny and joke. Hes just kind of been mean to me. He thinks he doesnt need to answer my good morning texts I send when I'm at school cause we live together.. he never asks how my day was when I get home he constantly just plays his game and ignores my existence.. I've tried talking about it but have gotten nowhere