Okay so my boyfriend has an extremely high sex drive and I used to, until fairly recently. He's away at army training and keeps telling me when he gets home he wants to have a lot of sex cause he hasn't been able to have it for a month. Normally I'd be completely fine with that and it bothers him that I'm not really excited about it. What could be causing me to not want it and what can I do to get my sex drive back?