Basically, an orbiter of my LTR, who'm she liked in the past but he missed his chance, constantly initiates conversations through text with my LTR. He showers her with compliments and flirts, and she lightly flirts back once in a while then lets the conversation die off. Only until he messages her again, it's a cycle. Now, I don't really care about this too much, they don't meet up in person, the guy is a thousand miles away.

I confronted her about this a few months ago. Basically told her to cut her shit, and stop playing with fire. That she shoud shut flirting down the moment it shows up. She deleted him, and they didn't speak for a few months.

About two weeks ago he added her back. He is connected to her family, and even her dad told her that this dude has been trying to get in touch with my LTR. She told me first thing "Hey this dude messaged my dad and then added me back, I had to lie to my dad and say my facebook wasn't working. If he messages me, that's the reason why, just a heads up."

Now I look through her phone once in a while to keep her in check (she doesn't know), and lately she's been deleting messages with him. I actually see these messages before she deletes them. They're just him initiating flirting again, and her lightly flirting back. Nothing bad, nothing that really bugs me, as she see's me flirting with other women and them flirting back, all the time.

My question is, whats the best way to react, and to proceed?