<human>: Can you summarize the given text in a few sentences?

Original post

I casually brought up the guy in question "so how's he doing etc.." and I flat out asked her "received any inappropriate messages from him?" To which she out right lied. "Nope, not since I first talked to him." 
I'm a little emotionally stunted in most cases (takes me a bit to process things) so we kept hanging out and I went into headspace. 

Eventually it started to show and I asked her if she'd like to try again answering my earlier question. 

She's admitted they never really stopped, started balling her eyes out about it, she doesn't know how to make it stop, and claims to shut them down *every time* (something I know to be untrue). 

I'm honestly incredibly hurt by the lie. I can understand her logic I suppose - although I am firmly against it. (She claimed to lie to 'protect' me).

She says I/she will do anything possible to make it right. I never offered her an ultimatum, she did this herself. If she's willing to toss away a friend of hers, which they have been for years before her and I got together, *would* this make it better? The lie still looms on me. If she's lied about it before, why should I believe it would be any different now being reminded *again* that these messages are completely innapropriate, and a deal breaker for me?

I'm really just looking for your thoughts. I do very much have feelings for her and would *like* to make things work, I just don't know if its worth it.
<bot>: she lied initially. Spilled the beans when caught, offered complete severance with the friend. Not sure if I can trust, but still in love.