Keep the head up young man!
It's better that you find out what they are like now rather than wasting more time under false pretences.
You seem like you need to get a 'f**k it' attitude about you though and not let arseholes like that bother you.
Also, stop trying to get a ride from your confidence coach, it's going to end badly either way.
1) You manage to shag her and you become a super confident/arrogant tosser that nobody likes or......
2) You don't manage to shag her but end up with a tag around your ankle after a stint in Peterhead jail for trying.