Ysb

Yeah, I live together, but not married..... She was all to me... but now... I mean, I can't even imagine she cheating on me.... And as far as I know it was the first and only time... by the way she met this guy a month ago, eat a snack on their first date, and that was it... she did it on the second....
I want to stay with her, but it doesnt seem "doable" right now, I mean, how could she, she tells me it was her fault, I asked her if I did something wrong, so I can be a better person/partner, but she always says that it was a huge mistake led by an impulse from her part... But been talking with him for the past month?
But still I want our relationship to work, am I gonna have strenght and trust to go on? Will she change? she really didnt tell me, but after I discovered, she told me she would tell me, eventually.... bs?
Waiting for more responses...