Tell him. Deal with the consequences.
For that matter, if you have this much difficulty dealing with a long-distance relationship, then maybe the right thing to do is just to break up with him. It's not fair to you or your boyfriend to cling onto a relationship that can't keep you satisfied. And you know if it doesn't, that's fine. There's no shame in being the sort of person who needs to have your lover in person--it's only wrong if you string somebody along because you can't be honest about what you need in a relationship.