Love / Polish men rules!!!! Love at first sight?, Is it possible? [16]

Hello everybody:

I would like to hear for some advice, I would appreciate it a lot.
Weeks ago I went to Warsaw and I knew a very handsome polish boy in a bar. I was in the bar with some friends and we were speaking in our language (not polish nor english...), so he came to our table and started to speak with us in our language!. I think that was a very nice detail. We start to drink some beers and I really had a very good time with he and my friends.

I liked him a lot and I think that I was not invisible to him!. When we got out of the bar, we continued talking and talking and it was really really nice. We were in the same hotel (because he was not from Warsaw and he was in the city for some days only) so we went there together (along with my friends...). Then, when we were there, every one went to their own room (every one of us had an individual room) and I went to my room.

While I was in my room, I couldn't get him out of my mind....I really liked him!!, so I decided to go to his room and to knock on his door...I was so afraid but deep inside of me that was what I Wanted to do, so, I did it...

He opened the door and I asked him if I could get in...he answered me "yes, of course"....anyway...we kissed each other and had a great time (no sex....just "good time") together. He was very sweet, I asked him why he shouldn't give "the first step"...why did he wait until I knock his door? but he just said that he didn`t want to be rude....c'mon!!, I didn't expect that answer but well.....

The next day, I was leaving the city so I went to his room and knocked his door again, just to say good bye, but nobody opened the door. I just slide a piece of paper under the door where I wrote kind of: nice to meet you, keep in touch and my e-mail....

Now I'm in my country and...believe it or not...I still can't get him out of my mind!!!, I can't say that I'm in love but I can't forget that time!!. I want to write to him but I'm not sure if I should do that...I'm afraid and doubtfull....I guess I was just a one-night-stand girl for him, but I would like to know him better...really!...I've been asking me why he didn't write to me even when I gave him my mail?....but I don't know if he got my piece of paper (with my mail) since I don't know if he checked-out the room (in the hotel) before I went there to say good-bye....maybe that happened or maybe he is not interested to know anything about me and that's why he hasn't written to me even when he has my mail!!........I don't know!!!

Should I write to him?, if yes....what can I say!!!
I really want to keep in touch with him but if I write to him and he doesn't answer....I don't want to experience that feeling!!....I feel very strange because.....even when I'm not in loved with him (maybe just......strong strong attraction??) I'm starting to ask myself....was it love at first sight?....

PS: Polish men rules!!!!