Spice things up?

So im not sexually active(im like less then average) but my bf is, so its very difficult for us because i dont want it and he does, so when it gets down to "it" im not into it... like at all

we've tried roleplaying

cute outfits(hate the damn things)

foreplay

any ideas on how to spice things up?

also my bf and i have notice my "turn on" spots change every time so its difficult to keep track

before you guys wonder, we've been together for almost 3years now...

Update Q&A;

yes, we are intimate its just going down hill and theres no particular reason why, im just not into it, i find it tedious and sadly boring.