Our is crazy, but our conversations are boring. how to spice things up in our lingo?

well, my boyfriend is very shy, but in a cute way...or at least it was cute at first. now i can't really stand to try and keep a conversation with him because it just literally puts me to sleep! so, now, everytime he tries to talk, i just kiss him. and apparently this turns him on because he goes wild and we have the best in the world!! he throws me in the back seat and pounds me as hard as he can. he pushes me up against the wall. we roll around all over the place. we do it in the shower. the hot tub. but still, our car rides home are silent. absolutely silent. even though he pleases me just right, i just don't know how much longer i can take our incapablity of communicating. what do i do?!