Advice please!

I feel ashamed of not being a virgin. And swore to myself I wouldn't have sex again until I'm married. I'm currently 18 & I've only had sex with one guy who was boyfriend for 2yrs but that ended when he moved out of state. I'm now talking to some other guy who goes to the same College as I do and have felt sexual desire towards him.. Idk if I should tell him I'm not a virgin. Do guys care at all? Should I not have sex at all until marriage?