MJ do not under any circumstances let this person know where you live or how. Ie.; job or job location. I will warn you again you could get really hurt phyically. Maybe even made dead if he freaks over the idea he's "friends" with a dresser. Or a girl who was a guy but now has moved on in his/her life. I am not saying he will but I can not stress enough to you how easy it would be for him if he has any actual combat experience. He will justify it in his mind and when the authorties pick him up he will simply say, (words to this effect) "HE/SHE asked for it." I am not saying he will, but for both of you it's best and better if you can let him go gently.
To that end let him know as soon as possible that this friendship is only for the time he is overseas. That it can not continue/advance once he returns home. You might even suggest that an old friend from school has reentered your life and you are going to pursue this avenue one more time. That will be easy for him to understand because i'm sure there is an old flame in his he'd like to rekindle.
I give you many for starting this friendship, even if it is somewhat selfish, because the troops need all the friends they can get right now. I know and you do too that the media is not portraying this "war" in it's best light and the troops know it too. But we must do all we can to keep their spirits up. It would have been better if it had never started but now it's too late. So keep it platonic and always refer to a later time when he suggests a meeting.
SarahLynn