How should I surprise him in the bedroom?

I agree with the cosplay idea, and whipped cream, try to get other things involved if your into props. If not, I would say new tricks maybe, change things up, maybe try to bring him into it more with more licking and fingering of him as he does things to you? Try to be as wild as possible I would say, don't worry about overstepping or freaking him out, guys expect us to be untamed in the bedroom and theyre going to want to tame you.

The best way to do it is with cosplay. ( dressing up) My Cousin and her husband have had the same problem. once every 2 months. And pretty soon they were doing it 4 times a week. Also try different positions it will work

The problem you guys are having is simple. He wants to bang you, slam you, give it to you in the pooper, shoot his load into your mouth or all over your glasses. He wants to toss your salad and have his tossed as well. He wants you to get dressed up like "Little Bo Peep" or a French Maid. He wants to bang you in the kitchen, the bathroom, the doorway, in public places like church or a library. He wants head while he drives. He wants to fiddle with your bean while you watch TV. He wants you to call him names, curse at him, slap him in the face. He wants to spank you, whip you in the boob with his junk. He wants to insert you while you talk to your Mom on the phone. He wants to wear your panties on his head and play Marco Polo in the pool. And YOU, YOU!!!!! You want to make love to him, nice and slow. You want to hold his hand and kiss him...YUCK!!! Go crazy, have fun together, loosen up and release your inhibitions and you'll see how things change.

WOW ONLY TWO YEARS! ME AND MY HUSBAND TO! BUT WE HAVE SEX TWICE A DAY! SEE I'LL TELL YOU WHAT I DO! I DRESS UP FOR HIM! BUY NEW LITTLE OUTFITS TO SHOW OFF TO HIM, DANCE FOR HIM, AND I MEAN IT'S ALL ABOUT YOU TWO ENJOYING EACH OTHER! OR ELSE SERIOUSLY 4 TIMES A MONTHS BECOMES TWO , THAN 1, THAN BREAKUPS! HAVE FUN MAKE HIM HAVE THE DESIRE TO THINK YOUR SEXY IN HIS EYES AND MAKE HIM WANT YOU!

Different locale? - i.e. stay in a hotel someplace

Different positions - there are plenty of books out

Roleplay - Does anyone need a nurse?

Toys - Wanna play with this?

I can offer more...lol

4 times a month is wack!!!!!!!!! u don't even have a sex life.

hot sex in the car ;D

chocolate :D or whipped cream. have fun and be imaginative!

whipped cream?

KY jelly, safe words, maybe anal. its just what you prefer.