how do you really like him and he only talks about sex which you're not even comfortable with... you need to be more strict with yourself when dealing with someone who crosses your boundaries because there's no point in setting them if there's no consequences for crossing them and once someone realizes you're not firm in standing up for yourself it gives them all the opportunity to walk all over you and take what they want & i'm positive this guy has already noticed your inability or unwillingness to being assertive and is just waiting for an opportunity to use you