Thank you. I've gained so much insight from reading your posts.
To clarify:
My WW eventually discovered the truth about our financial situation. The finances eventually got better when I got a new job. Because I'm always looking for better financial opportunities, I left my most recent job in October after 4 years. My WW feels that I job hop too much.
When my daughter was born, she slept in between us on our bed. As my work schedule changed, I moved to the couch because my alarm went off 2 hours earlier than WW. When we moved to a bigger place 2 years ago, WW and daughter took one bedroom and I took another. WW's idea.
Sadly, we made no efforts to talk about our problems before I found out about OM. We had no previous affairs in our relationship that I know of. I searched her phone and found the texts because I noticed that she was on her phone more than usual. I'm not proud of snooping, but I couldn't help myself. That same night I approached her about just wanting her to be happy. I'm sure I caught her off guard. I had no plan and was acting calmly, but impulsively, if that makes sense. She said that she didn't want our daughter to come from a broken home, but that she couldn't live like this anymore. She also said she wasn't sure if she could financially handle living in our house by herself. Than she left to go be with our daughter.
I've always truly wanted to save the marriage, but I've been building a wall in case it doesn't happen. I'm trying to be strong for the toughest fight of my life. I'm gonna fight until the end.