Pisces man and casual sex

I am 27/f and I had been texting a guy (28/m) for over two months but didn't date because he was leaving soon. We enjoyed our conversations but I didn't have any feelings for him. One week before he left, I called (first time) and said that it was weird that we got along so well but haven't even spoken on the phone. We spoke for more than an hour and he texted afterwards to arrange a meet. Met the next day for drinks. He wanted to pay but I didn't let him - 1) I don't like guys paying 2) it wasn't a date. We had an amazing time. He texted to make sure I was home safe and we talked a lot and decided that we liked each other enough to have a one night. I was ok with that - even planned to leave instead of staying overnight after the deed was done.

Went to his place and he cooked dinner and I felt comfortable and natural with him. I am not usually a casual sex person and I told him that passion is really important for me - I didn't tell him that passion came only when there are feelings. But when he kissed me and I was gone. I know he felt it because he asked afterwards whether it was enough passion for me. The whole time he kept staring into my eyes and smiling (like someone in love), caressing my hair and nudging my nose with his. I have an adrenaline rush just thinking about it again. He even held my hand when we slept. He continued to shower me with kisses the next day until we parted ways.

I continued to text him like normal but he seemed distant. He suggested meeting to say our goodbyes before we parted ways but then said he was too busy. I was ok with the one night but his intimacy got me emotionally bonded to him. He left the country even without saying goodbye but continues to like all my fb and Instagram posts.

How can a guy be so intimate during sex but have no emotional bond afterwards? Or does he have feelings but doesn't want to admit it to himself? My gut feeling says it isn't over but I don't know how to make contact and establishing a rapport with him without him feeling pressured.

P.S. He is pisces! and he does fit a lot of his zodiac characteristic.

"... decided that we liked each other enough to have a one night." => You have your answer right there. You guys didn't talk about if he liked you more thant that, so you cannot expect anything more.