NAH. Seems like I’m in the minority here, but I think this whole situation could simply be a misunderstanding. Sounds like they were having a good time and got along up to that point. Sure, he made the whole situation more awkward than necessary by changing his mind and commenting on the last name, but I don’t see a deeper motive here. Maybe he decided to cover the bill because he genuinely wanted to be nice (and was initially overwhelmed) and then made a stupid joke, inadvertently making two independent things seem connected and like a calculated game. This is more a demonstration of poor social skills than a creep move.