Is my relationship coming to an end?

I’m an 18-year-old girl and my boyfriend, also 18, and I have been together for a year. At the beginning of our relationship, he was really sweet and always eager to chat with me. However, lately he seems to have become distant—he doesn't talk to me as much, often ignores my calls, and even has his location off for hours at a time. I trust that he isn't cheating, but I'm starting to feel like he’s lost interest in our relationship. We’ve been arguing about trivial things, and he often puts the blame on me. The arguments usually stem from me expressing how his actions are impacting me, but somehow he flips it and accuses me of manipulating or guilt-tripping him. He even compared me to his ex, who wasn't the best person. I’m at a loss about what to do. I don't want to leave him, but I also don’t want to keep feeling hurt. It seems like he’s only really sweet and caring when we're together physically. Should I keep trying to make this work? I could really use some advice.