Stay or leave?

Ever since I met my boyfriend, I’ve had a huge glowdown on my mental health. I used to be this gym rat working out all day, having absolutely no break. But ever since I met him, my life fell apart. He doesn’t text me at all, unless if I make up a conversation, and honestly I’m feel like dropping him but I’m too attached to him and I have no idea what I would do if I were to leave him. Please give me advice . :(