It is perfectly reasonable to want a physically intimate relationship - especially at your age. This incompatibility will lead to built up resentment, and your relationship will suffer.

Everyone has needs. If shes unwilling or unable to meet your needs, you only have two options: have a serious heart-to-heart conversation and come up with a plan to fix it, or break up now.

If she does not recognize her lack of libido as a problem and says "its just who I am" or "I'm basically asexual" or anything to that effect - she will not try to change. If she recognizes it as a serious problem and wants to take steps to improve, then you have a chance. Be open to making your own changes to increase her sexual desire.