Please give advice! What should I do?

Wait. That is the best thing to do. I it sooooooooo hard I know! And it really does suck. and i'm sorry if this is not the answer you wanted to hear but it's the truth. it can have a great affect in the end. If he doesn't come to you in a week or less, then talk to him. tell him you miss him and want him back, tell him you will do your best to make the relationship work, as long as he agrees.