I think in addition to what ngdawg said, you can work on cultivating your libido with your mind through practice. The more horny you are, the easier it will be to overcome your inhibitions, right? Aside from physical causes, which you may or not be able to do something about, I am sure that you will be more horny if you think about sex more. It's easy sometimes for us to not be in touch with our sexual/sensual nature because we're simply not in the habit of it. For example, say you're on your way to go meet him. Are you thinking about what his hand is going to feel like on your skin, or are you wondering whether you can afford to buy a new laptop this year? So start thinking about it, start fantasizing and see if you can get yourself more in the habit of it. Buy yourself some erotica, maybe a book of women's fantasies like My Secret Garden. Good luck!
