I really need advice?

I got this guys snap maybe a month ago on a trip with all people of my year. We’re been snapping back and forth. We don’t go to the same school so It’s kinda hard to get to know each other. Me and my friend planned a date with him and I this Saturday which he came to. I’m pretty sure he doesn’t like me like that, but if not I wanna be his friend. He has always ghosted me a little but before our date he rarely ghosted. However, after our date he ghosts more, and he turns on ghost mode at school and at night. Is there any specific reason for that? I really want to invite him to my birthday which I’ll be celebrating on a beach with very few people + one of his friends. I want to get to know him better, but I need to convince him somehow. My friend, she asked him today about the birthday thing, but we haven’t gotten a response yet. I really need advice here.
I really need advice?
Post Opinion