Differing Sex Drives

How does one deal with vastly different sex drive in relationships?

I'm 21 F and I've been with my boyfriend who is 22 for over 2.5 years. We plan on getting married within the next couple of years, but the one issue we have as a couple (besides our own personal issues) is that we have really different sex drives. I don't really crave sexual activity often nor find much interest in it. I'm not asexual nor do I not enjoy it, I just don't really feel the need for it often. Him on the other hand could engage in sexual activities multiple times a day. It makes me feel like I disappoint him when he wants to but I don't.

Does anyone else have this problem, and how can we deal with it?