Calcpl ... after being together 5 years its not the least bit unusual for sex to become a bit routine and boring, and its often the cause of couples splitting up. So changing your routine, and adding some "kink" to your sex will probably help revitalize the excitement of sex. If you've never really explored your woman's body before ... I mean really closely explored it, you might try hunting out her "G-spot". Practically every woman has one, but some are much smaller than others, and some females aren't even aware they have a "G-spot" because no one's ever really gone to look for it. It can be fun, trust me, especially if you can help her to start having g-spot orgasms.
Anyways, first thing I'd want to do would be to share sexual fantasies with her, to help find some of her suppressed sexual desires and to give me an idea in what direction to go. This sounds easier than it sometimes is, especially since the 2 of you aren't married ... she's likely to be a bit reluctant in revealing her deepest sexual desires. Hopefully the 2 of you are able to have conversation of this subject. Also, add in some fantasy play, toys, and have sex in places other than your bedroom ... to change the routines. Possibly, after she feels comfortable with these, you might suggest your desire to raise her sexual fulfillment by adding a 3rd partner ... another man. Eventually, she'll be comfortable with trying other ideas as well ... just keep reminding her that its to raise her sexual fulfillment ... to help her have orgasms she's never had before. Personally, I really get off watching my wife CUM by masturbation ... watching her nipples get hard, her skin flush, and her pussy start juicing. Mac