What happened ?

Met online in April.

Met in person in Sep.

Arranged to make a trip in December. December came and so did the trip, I was very excited to see him and he said he was too. He would text me everyday, day and night before the trip, our encounter at the airport was movie-like (romantically ridiculous) ... We had good sex, explored the city, culinary culture, etc.. we went back home, we both agreed to have had a great time .. He has texted me 3 times since then ... I said I felt weird with that behavior and now he says he wanted to have something reasonably serious with me but that he felt like a square peg in a round hole. What’s up?