So this happened last year, before I had any knowledge of TRP. Just remembered and want to learn from it.

Went out with my LTR at the time, let's call her C. We had been "officially" together ~3 months, plus 4 before that just going out and fucking. We're out with some friends at a bar, and as soon as we go in, she pulls a girl friend into the bathroom. They both walk out and go right past our table, say nothing, and sit outside with another group of people. That's odd, but I shrug it off. The other girl comes back and tells me the people outside are C's ex-BF's friends and she wanted to say hi. 15 mins later C comes back and sits with us.

Some time later, in comes a tall, good looking guy. C just stands up and goes right to him, gives him a hug and they sit at the bar and start chatting. Again, this was back in my pre-RP days, so I did nothing about it and "shrugged it off" (even though it wasn't cool, but I acted like it was).

~15 mins of chatting with him 1 on 1 and she comes back and offers that he's another friend she wanted to catch up with.

Some days later she casually mentions that guy was actually not a friend, but her ex. I didn't know much about the guy (hadn't asked), but later found out he was not only tall and good looking, but quite wealthy too... took her on trips all the time (I, on the other hand, was struggling financially at the time, so there's that). They were together 4 years and "mutually ended it", although apparently the guy had a new GF soon after. Women's trickle truth being what it is, I suspect he left her.

C broke up with me a couple of months later, gave me no reasons. She had a new (tall) guy soon after (hypergamy in action), which led me to find TRP a few months back.

Now, in my quest for knowledge, I'd like to get your opinion on how to best handle a situation like that (aka in how many ways I fucked up). I know now how disrespectful it was of her to steal time from me to hang with her ex, her not say anything, me not getting introduced, and even her lying about him "being a friend".

Any input would be greatly appreciated.