Not knowing your girlfriend, but it sounds like there could possibly be some sexual abuse (SA) in her past that she may not have dealt with & may not be able to deal with that is causing her to keep that distance between her & you.

If that is the case, IT HAS NOTHING TO DO WITH YOU!!!!

Also, some women have much less of a drive for sex. Personally for me, not being married would definitely cause me to be less willing as I believe that making love is something that is between 2 married people no matter what the age. Don't know what her feelings on that are either.

I know for me, with my husband, I had issues with him before we got married......definitely had a respect issue that was a constant issue in our relationship & looking back, I didn't feel the love for him because of that lack of respect he caused me to feel & it was almost impossible to have the feelings that made me want to make love with him as I truly believe that it is an expression that comes from feeling love for the other person.

Just offering a few thoughts on this from a different point of view.