We have sex almost regularly. we are both in our mid-30s and have good enough bi-sexual experience. My bf has a thick 7" cock that I admire and enjoy sex with. But soon after he comes into me, irrespective of whether I have orgasmed of not, he disengages and goes to sleep. I wish to have his cock inside me with little movements so that I can feel its length and girth, and go on enjoying it is throbbing as I squeeze it with my pussy muscles. He can take missionary position or I riding his cock to have this sensation for hours before I cannot hold on any longer!

It is difficult to ask this desire of mine to him as he is more interested to have me getting his cock sucked. I do often dream of being fucked by a big black cock of which I have heard so many stories.