We have been together for 4 years and she is pregnant with our second child. I’ve always suspected she hasn’t been totally honest about a guy she was involved with before we met, I eventually caved and snooped (not proud). She had been sexting him throughout lockdown and had been doing a lot more pre lockdown essentially since we got together (a good 2 years). I’m devastated and furious at the same time. I know that if I confront her it will likely be the end of our relationship, if it was just us I would already have done it. However as we already have a little girl and with another on the way it isn’t quite as straight forward as that, and I’m scared that I’ll not see my children out of this. I’m at a total loss at what to do, and it is playing on my mind almost 24/7 - she has noticed my mood swings which is making it worse.