Opinions?

Kai • 9/29😘. 17
Feeling a little sad. I feel like my boyfriend and I are drifting apart. We rarely talk anymore and it seems like were always having an disagreement. I don't know what to do. I don't want to give up because we've been through so much together. I'm not sure if he's unhappy, and I can't help but feel that's he's being unfaithful.😕Please Help!!