What do I do?

So my boyfriend accused me of not loving him a few days ago cause I was always on my phone (only cause he was) and I came to his house today, he was completely distant the whole time, only hugging and talking to me a few times. He got all dressed up and did his hair nice for the gym then left and I've been alone here for over two hours now. Idk what to do, wether I'm over-reacting. What do you think? Thanks for your help.