im not exactly sure what youre routine is or what you generally do but i get the feelign that you end up hooking up with a girl on the dance floor at bat etc k close for 10 mins and then go back to your mates ?
if this is what you do then i think the easiest way for you to escalate things would be to isolate her and then chage venues. just say something like , "we cant talk in here, lets go to ( whatever bar ) ".
once youve got there focus on building up sexual tension and try to make an excuse to come back to yours. mention a film or show her some photos whatever , it doesnt matter cause once you get back to yours thats not what your gona be doing lol. btw this doesnt mean tricking her into coming back to your place but give her a valid reason to so that she doesnt feel like a slut.
o and be prepared for lmr

2 steps forward one step back should solve it .
hope this has helped.