text: how can you tell for sure if a guy likes you? i like this guy but he is w/ some1. but he said that if he wasn't then he would ask me out. i want to know if he is really serious or just kidding. should i tell him that i like him a lot too? its a 50/50 thing about telling him. with things like this you have to becareful. just start putting ideas in his head about you and him.