Libido enhancement?!!

I'm 22. I have NO sex drive what so ever, and it's really straining my relationship. Its been like this for maybe a little over a year now. We will have sex once in awhile(like once every other month or longer) and when we do I am just not into it at all. A friend suggested finding something to take. I've been looking on the internet for a few nights now. On one site I found these pills called HerSolution. And at GNC and the Vitamin Shoppe I found Steel Libido for women. Has anyone tried these? HerSolution is pretty pricey, but it does say they have a money back guarantee. But it's like 45$!! The other one is like 25$. I also found a breast enlargement pill? Any thoughts on that?!
Any suggestions would be great! I'm desperate!