i have a couple of suggestions for you.
1st. agree on a "safe word". maybe "gasoline" or something completely unrelated to sex. maybe "library" is a good word.
2nd. use this safeword to stop whatever is going on that you may begin to feel uncomfortable with. this way you KNOW that you are safe and you can trust that no matter what happens, when the safe word is mentioned, everything stops until you are cleared to move forward (if you are).
3rd. try things that he will like. take a feather and run it all over his body (or a feather facsimile). give him a massage while he is tied up...just to build up the energy between you two.
4th. maybe even do something that would make him "slightly uncomfortable" to get him "out of his element" a bit. don't hurt him in any way, but maybe intimate that you might consider it...by running your fingernails across his chest or tummy...if he b@tches about it, then spank him... or put one hand in warm water and touch him with it, and then take the other hand dipped in ice water and touch him with that.
there are all kinds of things you can do to make it "interesting". i love doing new stuff to my b/f. we have a blast in bed!
oh here's another idea for you. put some plastic sheeting (available from lowes or home depot) down on the floor in your living room. blind fold him when he comes in the door to your apartment (or house). take off all his clothes and tie his hands and feet however you want to. lay him down on the plastic sheeting and take a bottle fo warm mineral oil and pour it all over him...slowlyyyyyyyyy...
then rub on him, lay on him, slip and slide on him etc...my b/f freaked the heck out when i did this! it was awesome. keep some towels handy so you can wipe down without creating a mess in your house on your way to the showers (fun too).
jasmine