Try something new!

As married couples we tend to get in a rut and have a "sex routine." Blow his mind and try something new!
Like i said in the other post, put a vibrator against your cheek while giving him oral. Buy a new costume (or pull one out that has been sitting there for a while) having that mentality of "being the nurse" or any other person gives a lot of people the ability to try things they wouldnt have before just as themselves and almost an "excuse" to break out of the rut.
Try a new toy! go in together (or surprise your partner) with a new toy, whether it is a vibrating ring, a tongue vibe, the We Vibe (can be used DURING sex as a gspot and clitoral stimulator and feels great for both of you) check out my older posts to  get more info on that.
The biggest thing is make sex fun! It is not just a thing to get "over with." It was made for us!