My boyfriend and I have been together 18 months, over the past year several things have changed since February of 2012 he's grown less and less physical. He used to be very affectionate towards me, kissed me everyday, held my hand, held me in general, as time progressed, he would roll over as we went to bed and no longer cuddle me at night, this lead to him no longer holding my hand or pulling away when I reached for his, he no longer hugs or kisses me anymore until we leave each other for the week (we spend weekends together) even as we are reunited, he doesn't hug or kiss me. About the only time in our relationship he shows me any type of affection is when he wants to have sex. I am so hurt by this, I've tried to discuss it with him numerous times and it always ends the same, with him saying "this is just how I am". I don't buy it, he swears up and down he isn't seeing anyone else, that he still finds me just as attractive as he did when we first got together, but his actions prove otherwise. When we come together to have sex, he doesn't even take the time to see that I am fully satisfied, I have trouble finishing any other way besides oral sex and he will only go down on me for maybe 3 minutes and claim sufficient timing. I end up sexually frustrated every time. I don't know what to do anymore. Is my partner a lowsey lover or could this really be him? He was very loving and attentative when we first got together up until about 5-6months in.