What do you do when your boyfriend can't handle a relationship?

Okay. My boyfriend, er, ex-boyfriend, I’m not actually sure. We’ve been together for 4 months. But we’ve been actually like a couple for the past year. We’ve been close the past two years. He’s liked me the entire time, and I liked this other kid. It took me a while to get over the other kid, and allow myself to like my current love. He’s 18 now, 17 when we started dating, and he’s never had a girlfriend. Always waiting, being “used” and “manipulated”, and never really feeling loved. He’s an emotional guy, and like all guys, like time to be alone.

He’s a senior this year, probably under a lot of stress with everything going on. He also just completed his Eagle Scout project. He always made time for me while he was busy. We always talked about our future, planned it, said we were gonna be together forever. He would always say he was lucky to have me, and never wanted me to leave him. He promised that he was never going to leave me.

And now, out of the blue, he told me he couldn’t do it anymore, and he wants to break up. He feels like he can’t handle it, he can’t do it, and he misses being alone. And sometimes the relationship hurt him.

I had no clue.

This happened on a Tuesday, it is now Saturday. We’ve barely talked, except when we’re arguing. I really have a hard time with dealing with losing him.

He’s been there for so long, I trusted him not to hurt me and break my heart.

Currently, I’m giving him space and time. Hoping he can come back to me eventually. But it is so hard waiting for someone that I don’t know is coming back. It hurts so much.

I suffer with depression and anxiety, medication and everything, and they arn’t even helping with the situation.

Can anyone figure out maybe why he is doing this? Or what I can do so I can please him and keep our friendship better, and make sure he comes back? Help. I need it.