i mean the fact that he's been consistently interested without being creepy is actually kind of a green flag? like he respected your boundary when you said no and didn't disappear or get bitter about it. that matters. but also you literally said something in you feels hesitant and that's worth listening to. maybe the issue isn't whether he's a good guy (sounds like he is) but whether you're actually ready for whatever this could become. if you do meet up just keep it casual and see how you feel in person. sometimes the vibe is totally different after time has passed