Sex should be pretty much mutual. I love candy, ok? But if someone was standing over me force-feeding me Milky Way bars, I'd get pissed! :-)

Ok - you either should both be on the same page sexually or work out what works for you as a couple. Otherwise, the relationship is hurting to some degree. If you are bf/gf mainly for the sex together then you're out of sync. You don't pick a guy because he satisfys your sexual needs - just as a guy doesn't pick a woman for the same reasons.

Try a mini-separation. Couples who are "good" can spend a few days apart and then see how you are together after those couple days. This is normal for many couples to have time apart for job reasons, family reasons or other things. If you can't come back together nicely after a couple days apart, the relationship is not really that good and you may want to find someone who is more compatible for your own needs - both sexually and outside of that. There is a ton more to relationships than sexuality - but being young as you are, that isn't something that you guys may be thinking about right now.