Do you think he's a player? (Please Answer)?

[Lyall]

I'd be wary.
It might not be that they are a bad person, they might just have some insecurity issues and handle them in a silly way.
Sleeping with them will only stimulate that part of them. They will just continue being that way.
Having a fantastic, fun, day and not going past hugging; that'll stick in their mind.
If they're an ass then they'll call you cold and a tease. Be glad that you didn't then!
If they seem to enjoy the day too and don't push too hard, then you're probably doing them a favour by not sleeping with them straight away. You'll have a chance to get to know each other and then later you can do that. If it goes badly, then at least you can say that you didn't hand it to them on a plate.
A good way to avoid any awkward moments is by doing something outdoors. The typical movie, food, etc or whatever else you can think of.