Long Distance or No???

So me and bf have been together for almost two months and everything's great. The problem is that he is an international student studying abroad and goes back to the UK in June. We've been through alot since September so we've already expressed how much we love each other. I know that a lot can happen in 5 months but as of now I know that I'll feel devastaed when the time comes. We haven't talked about long distance because he says he doesn't know when he'll ever be back in California again. Someone help me plsase!!!!