I feel like I’m always offering sex just to keep him around

Hi everyone. I’m in a situation with a guy we’re not dating, but I really like him. I feel like I’m always trying to keep him interested in me, especially by offering sex or being available whenever he wants. Deep down, I don’t actually want things to be this way. I just want him to genuinely like me, want to talk to me, and choose to be around me because he likes me, not because of sex. But somehow I keep coming back to the same point. I get attached, I’m scared he’ll lose interest, and then I find myself doing things just to keep him around.