Boyfriend's going on vacation...

So, my boyfriend of almost three months is going to Brazil for a month in about a week. We've been seeing each other a lot before he goes, but its going to be really hard for me. I'm a very clingy person and I require a lot of physical attention in a relationship if that makes sense. Do any of y'all have any suggestions as to what to do when he leaves? I'm going to miss him so much ))):