What should I make out of it?

I haven't asked a question here in quite a long time but none of my friends seem to be answering their phone today and I really need a second opinion. On Wednesday night some friends of mine introduced me to a Dutch friend of theirs and we connected. He's very perceptive and although he barely knows me, he knows how to push my buttons. Although he's younger (19, I'm 20), he is very mature for his age, maybe because of his background (his father died last August, his mother remarried soon after, he lives alone). He is caring, thoughtful, says and does the right things - nothing cliche but what feels right to me. He surprises me - few ppl manage to do that and above all he broke into my carefully built barriers in a short time. I was afraid to make eye contact with him because he seemed like he could read me like an open book. Problem is he's in a relationship (+ he lives in a different country). At one point in the night I told him I was attracted to him but that I understood he's in a relationship and I don't what to be the reason why he cheated on her. They are currently having some issues but I told him he's with her for a reason and I respect that. Later on, when we distanced ourselves from the group to buy cigs, he told me if he weren't already involved he would definitely give us a shot and asked me to kiss him, to live the moment. I refused despite him asking me repeatedly. I wanted something more than a random kiss and I also knew he was taken. He was amazed by my self-control. Told me I'll be a happy person and kept repeating a bit like lunatic or someone who has just witnessed something unique/rare that if anything goes wrong with his girl he's coming back for me. I told him not to promise such things but he seemed convinced. He also told me not to tell anyone abt what had just happened, that I had his trust. I refused his further advances to hug and to be close even if I wanted to because I didn't want to allow myself to hope for the impossible. Towards the end of the night I relaxed and we cuddled to 'somewhere over the rainbow'. He asked me to add him on FB and promised we'd meet again this weekend with the grp. He hasn't accepted my request yet and he didn't contact me this weekend either to meet. I tried calling and messaged the people he's staying with but didn't hear anything from them. I have just received a short message from one of them saying he wants to spend his last night with them. What should I think? I feel like I'm being avoided. The night we met I stayed out all night because I felt it was worth even if the next day I had a 12 hr shift. I never did anything like that. Now, I feel like someone slammed a door shut in my face without any explanation.