My boyfriend and I have been together for a little over a year and a half. We have lived together for almost the whole relationship. We have had several big breakups where he has moved out, but we always get back together. We have been doing really great for the past 3 months or so. Lately, he has been acting like he did when we broke up. He doesn't communicate or want to have sex. When I ask him what is wrong he says nothing. Last night he went out with his friend and didn't come home till almost 3AM. We have talked about this before and he promised he wouldn't do it again. I don't think he is cheating or anything but I am just not sure what is going on. I don't want to loose him...we have come so far.