help im so stuck

I'm in a relationship of a while now, and we used to have this really great connection that's now dwindled. I've tried to put on the effort to keep it alive but I cant help but feel its not there. He isn't recognizing it or helping either. I've recently met this guy who shares my same culture (which is quite rare for me) and he makes me laugh, we really get along and we have similar interests and values. He's so cute and we've been becoming closer over the past few weeks. The other night we got quite physically close (not crossing boundaries but pushing it real far). I know he likes me too. I find myself wanting to be with him more, and I get jealous when other girls give him attention, however one of his friends tried to fish some information out me, and realised I'm dating someone for a while. I thought he already knew...now I don't think he does. It wasn't a problem, but since the other night when we got close, I'm worried when they tell him he will think bad of me and not want to talk to me anymore or even be friends.   If anyone has any advice on this please share.