I dont understand !!

Hello all I have known my boyfriend for over a year, we had a long distance relationship and have recently moved in together (2 1/2 months) well I thought things were going great.. we never slept together till I moved in with him (talked about it- likes dislikes we talked about it ALOT)
well we have had sex maybe 3 times since I have been here. I ask my boyfriend what is wrong and he says nothing he says He loves me wants to marry me. I asked him if he wanted to be friends I could go, I asked him if he was unattracted to me sexually, did I do something wrong.. all no answers to my questions.. so is it me or is something just not right?
I am at my wits end I have no idea what to do and I keep hanging out thinking oh he will come around well that doesnt happen. I told him last night that I was going to leave he begged me not to he said he loves me needs me and has just been under stress and hasnt felt good my response was bullshit...
I love this man with all my heart but I do not want to stay in a loveless relationship. He kisses me good bye in the morning and I am lucky if I get a kiss before I go to bed at night. I am tired of crying over this and feeling like its me. He honestly acts clueless when I try to bring it up.

Don't marry him.

Drag his ass to relationship counseling and work on getting him to share his sexual anxieties, or possibly his sexual orientation.