Spotting u from afar, on the cruise ship, he immediately recognised u. You were the tiktoker who had shown up on his fyp last summer and he has since been stalking u on socials. He did have a very generic idea about u as a person, and liked that you werent very different from the typa person that he was. He assumed you could not tie him down or make him feel restricted like he felt in his previous relationships. His past relationships that he had with women way older than him, all seemed to be using him for his money, and clearly not interested in him as a person. He understood that he was a kid but did that mean girls couldn't get attracted to him? He desperately wanted to shoot his shot with you, having liked a girl his age after a very long time. A quick dm wouldve done it already but the stalking and snooping did allow him to figure out that u were in a relationship, and over these months, had a long withstanding relationship drama go down with your now ex-boyfriend, over social media (in your particular country). You were probably available now right?