Most Helpful Guy
I don't think he's playing you, he probably took you for granted and regrets his desicion. But still be careful, his habit of messaging only during the night sounds strange.
Most Helpful Girl
From my own experience, during the day he has a social life - hanging out with his friends and maybe other girls, having fun, stuff like that - and at night he gets bored, he has nothing to do and decides to play with you a little. Don't trust these types of humans. Don't be their second choice and the person they think about when they get bored. You deserve much better.