am i too tight for my boyfriend?

[analogem]

i've been with my boyfriend for about 3 years now, and the only position we've mastered is the missionary. while i dont mind, i think he's getting tired of "doing all the work." though i do make it up to him in other things, i know he likes and wants to try other positions and trust me, we've tried, many times, but everytime he says i'm pinching him too tight and it hurts. then we just sort of laugh about it and go back to missionary.

what can i do to... loosen myself up? or am i just born this way? i thought guys like tight pussys?