am I stupid?

I have started a relationship with a man who is leaving for the military in almost a month. we've been hanging out and getting close, all that since last month. I've got so attached to him it's unreal. he is like my best friend . But he's leaving . we both knew what we were doing but not sure where we were going. we were joking around about marrying each other than he got all serious on me (not about marrying me) but by saying he would gladly send me off to fly with his family to see him asp...feel so stupid for setting myself up for this. But he keeps talking about a real future. I just really care for him I truly don't care where he's at i wanna make it work. I feel so dumb for saying it because it's been but a short time but no ones ever made me feel the way he does. I think it could be something real. thoughts?