I caught his @$$ cheating

So a little background I was with my bd for 4yrs and during that time I had my two kids, he was physically, mentally, emotionally and financially abusive. He would constantly lie to me and cheat on me. So I eventually left him, and then I met my bf. We been together about a year n half now. He knew all this and was around for some of it and he would be the one holding me when I went through my episodes. He took care of me n my kids, loves my kids and treats them like his own. That said things haven’t always been good, we’ve had our rough patches and a miscarriage together. Currently he’s out of town looking for work because we’ve hit a hardship.

Now usually i try to temper myself because I know I have my own insecurities and I’m currently in counseling trying to heal. I try no to just believe the crazy thoughts and try to think them through. BUT I didn’t listen today and went along with the crazy. I have an emergency phone that if our phones don’t work then I can use that to get ahold of someone for emergency’s since we live in the middle of nowhere. So I used that phone to text him. Pretended to be a girl he gave his number to at a place he used to work. He confirmed he was trying to link up, said we could have some fun, and even sent nudes. (I used random pics I found online) so he cheated, and we have had this talk before that that’s a boundary I consider cheating.

Now my predicament… im torn in two because I really do love this man and so do my kids, especially my daughter since he’s basically her father since their bio dad walked out their life. So here are my two options I have given myself.

1) be cold hearted and tattoo a little matching set on the both of us so he will never forget me, act like I don’t know anything and pack up and leave without him knowing and block him from everything. Especially since he can text me he loves me and misses me while texting the other phone dick picks trying to set up a day to go sleep with fake person…

2) confront him with the evidence when he comes back, and give him a chance to fix things and continue to build what we have and give him a chance to stay in my kids lives.

I know I probably sound crazy, but please just try to put yourself in my shoes. My kids love this man he’s stepped up as their father and i dont want to put them through losing another dad. But in the same hand I don’t know how to handle this betrayal, especially when he’s seen me so torn up and at my worse dealing with the trauma my last relationship gave me. Side note: he does have mental health problems. And a sex addiction that he did go get help for before and was really proud of himself for getting over but it seems it didn’t stop. Any advice or kind words would really be appreciated. Thank you