Sex

Is it possible that I am addicted to something I've never truly had?..not willingly any ways.
This sux because guys actually like me,but i turn their like into lust and then end up wanting some emotions that come with sex.
This guy likes me right now but I only like when he touches me,and when he does touch me I imagine it being someone else,my "ex boyfriend".
is this insane?
am I?