My boyfriend and I have been together for a year and living together for 4 months. I am 26, and he is 32. I feel like we aren't having sex nearly enough...once or twice every couple of weeks. I have brought it up countless times, and I feel like I have to practically beg him for sex sometimes. What could be causing this? He says that he is very physically attracted to me, but his sex drive just isn't that high anymore. wtf? any advice?!