<human>: So something that has got to be known is that my girlfriend is very very hot and pretty, and as a result always gets messages from "fuckboys". She usually shares them with me and we laugh about it, and it's all good.

However, very recently she told me that we are getting used to each other a little too much and we need to rekindle the passion. We both know for a fact that we want to be with each other, and when we ran into this bump I told her "is breaking up something we want to do?". We both agreed that no, we want to be together and we need to spice things up.  She told me about this one guy thats been giving her a lot of attention, and that shes let him flirt with her (over text) for the attention, and that shes going to put a stop to it immediately. 

Later in the day, she showed me screencaps of messages saying 

GF "hey, I need to talk to you"

FkB "yeah?"

Gf "I think we should stop whatever it is thats going on. I told my bf, this has to stop"

FkB "okay"

This brings us to now. I asked out of curiosity to see the previous messages, but there were none because all the flirting took place on snapchat, a HUGE red flag for me because thats a little to convenient.

I feel like she may have emotionally cheated, I don't know what to do.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: gf told me a dude was flirting with her over snapchat, she immediately cut it off but the cynicism in me thinks something else was going on