Kroze, man, I'd say yes. I don't wanna call your girl names, but if it quacks like a duck, and waddles like it just got f*cked after the 2nd date, it's probably a slut.
If she's hot and you have fun with her, you may wanna keep her around for fun - make sure you USE PROTECTION. You are a military man which makes you a target for a chick looking for a paycheck, and you don't want to get her pregnant on accident [also known as "she conveniently forgot to take her pill" so she can trap someone with a steady income]. Wrap up before you do the deed, and DON'T TRUST HER FOR CONTRACEPTION; don't trust that she's taken her pill, used her foam, whatever other forms of birth control, and don't use a condom that she provides [could be sabotaged] - you are a man, so buy your own. Don't keep them in your wallet - if you do, replace it at the faintest sign of wear on the package, or every other day that it's been in your wallet. Don't store them in your car, no matter how cool you keep it. Treat them like they are more important than your flak vest and rifle, combined.
Just looking out for you, man. These are crazy times.