The joint checking account balance was the last straw, not the affair
I always thought I'd leave if I ever caught her cheating. Turns out the real wake up call came from a bank statement in July. She'd been sending money to her sister every month, about $300 for like 2 years, while we were drowning in credit card debt. I only found out because I was organizing tax stuff and saw her password written on a sticky note. It wasn't the generosity that got me, it was the planning. She hid it so well, and that made me realize she'd been hiding other stuff too, the emotional stuff. I packed my bags that same week and moved to my brother's place in Tacoma. Has anyone else found out something financial that hurt worse than any confession ever could?
$300 a month for 2 years is almost $7200 she quietly sent out the door while you two were stressed about bills, and she never said a word about it. That kind of secret hits different than a one time mistake because it shows she was making a choice over and over, every single month, and looking you in the face the whole time. I went through something close with my ex husband, he had a whole savings account I didn't know about and was pulling $200 out of our main account every payday to feed it. When I finally saw the statements it wasn't even the money that broke me, it was realizing he had this whole secret life running next to ours and I was the last to know. You can forgive someone for being weak in a moment but hiding and planning for years is something else, that's a daily decision to keep you in the dark. You did the right thing getting out and moving to your brother's, that bank statement probably saved you years of your life.