Why did this guy look at me particularly?

A guy that I used to like and adore a while back. It was me and another group of people. He kept looking at me particularly and said that would never get married ever again if he gets into a divorce. I kept dwelling on it for a while and way later found out he really like me. Like has interest in me. First thing came to my mind if he was to ever marry me and we didn't work out that he wouldn't marry anyone else. I don't know lol. Then at the end he said whoever his future wife will be. And he kept smiling at me.
Why did this guy look at me particularly?
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