Most Helpful Guy
You can't force someone to love you. It just happens.
As for telling the difference on whether his feelings are genuine or playing mind games... the simplest answer is if he has sex with you and you never hear from him again... then he's playing you.
I guess if he actually likes you he would spend as much time with you as possible, buy you little gifts, send you sweet text messages that melt your heart. It's more in what he does than what he says.
If he promises to show you the world but the only place he takes you is his bedroom, then he's playing you.