How,i deal with my friends with benefits.

I'm not sure if this is normal, but when i have a girl be my friend with benefits, i get her having an extremely good time with me over the course of several months, and once she finds a guy she likes, i give her a couple of pickup tricks, like learning how to spot ioi's in a guy, (basically, pick up for the opposite sex) and try and get her with the guy she wants to be with, sometimes coming to me for a good hard lay when her boyfriend is away for long periods, and she comes back to me for another good while when they break up, until she finds another guy.

Am i doing a good thing? this was a normal thing for me to do wiith all my girls until i reread The Game to touch up on my skills, when i came across a golden pick up rule: "Always leave them better than you found them", and i think what im doing kind of exemplifies that.

Is what i'm doing ok?