@MissFrench,
alcohol helps.
invent an alter-ego, a slutty version of you, with a new name and maybe a wig. go to the club as this person.
leave lots of time between your regular life and going to the club, to relax and pre-game.
pregame: get into your fantasies about being sexual with or in front of other people. you and your mate should encourage each other in this, talk, play with each other, and roleplay pretending that your mate is another man as he plays with you.
time will help if you keep going and if you have good experiences...nothing is better that seeing for yourself how desirable men find you, this will boost your confidence and will make it easier to put yourself out there. it might be that your problem is fear, in which case seeing that your mate can and will protect you will also make putting yourself out there easier.