I am going to assume that this is your boyfriend's only cat, and that your boyfriend is his chief companion. If so, the cat is very likely feeling a bit jealous and possessive. The rolling at your feet may be an enticement to reach out to him or a demonstration of mixed emotions, as the cat may be trying to adapt to you. I suggest speaking sweetly to the cat, using his name, but not trying to touch him. Let him take his time in initiating physical contact with you; when he finally jumps in your lap and accepts your caresses, you will know you've arrived!