I'm in a good LTR but I want to be prepared to walk at any time. I want to have at least 2 DTF girls that I can call to fuck, but I don't want to actually cheat on her.

My concerns are about what happens if she finds out I'm asking some new hot girls for their number. I have a handful of girls in my social circle that give me lots of IOIs but I'm not sure how to make them friends without giving her an excuse to make hang out with new guy friends.