LTR at a coed gym without you, a male personal trainer of any sort, taking kids to a repetitive event with men, and so on... These guys will chat her up over and over. I mean.. us men, we ask each other how to do just that all the time. Even if you go to the place and check it out and your RP aware the dudes will lie to you and so will your girl. We can see it, if our girl is decent looking or better the dudes will check her out. This is NO problem and expected, we do the same all day long. What you watch for is her body language in response, when the dude pops wood and she is reacting (facing, getting closer, getting LOUDER, spinning wrist up, playing hair, posture improves, chest out, the list goes on...). If your ok testosterone and RP aware you will notice her reaction. Don't pay attention to what she is saying, but what her body is telling. This is the dude that is trouble. remove her or him from the situation; period or next her. If it is a complex LTR with kids and so on, you might not want to next her... lots of thread on that topic. If your low test or not RP, probably won't notice or won't know what your seeing and think they are just being FRIENDS... If no kids and not much invested, next. If a plate; leave as a plate and no LTR.
Reality is not nice. Women can not fight there body, the body will win except for some really rare case that you will never encounter. As men we must manage the environment to keep her safe and loyal. She can not do it, I know women will tell that they can and get the hampster going on all fours with reasons why. They can not, we must protect our own. Intrestingly we will find that she will allow us to do that but will not do it herself some times. That is submission. When she does it herself, that is golden. Util she proves she will do it herself assume she can not. Did not say will not, said can not.