Re: I'm 21 and have no Sex Drive!
It could be physical---are you on birth control, b/c that changes your hormone levels, and with some women it decreases their libido. Or, you may need to try different things to help stimulate you. have you tried masturbation to see if you are able to get stimulated and orgasm?
It could also be a mental issue. If you are stressed or anxious about anything, that alone can interfere with your sex drive. How is your relationship with this current boyfriend?
There are a bunch of different reasons for decreased sex drive, so you have to try to figure out what the problem is.