I wouldn't pursue anything until after you came back. Maybe say something to him so that he knows how you feel, but don't make anything official because you never know what will happen in the 5 months that you are in California. The one thing I would advise, is not to jump into a long distance relationship. That's always a bad idea!
Ok so we hang out yesterday I mean friday. We talk you know like firts date. And Im have to leave early like at 11:30pm. So we were talking today at MSN so the kiss thing cameout and he told me that he want and I told him ye me too I told you yesterday but u dind't get it and he was you were serious! And I was like hell yeah!!. So we are like alright.