Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: For the past year I’ve been going through an uphill custody battle for my son as his mother started withholding custody about 8 months ago and I haven’t seen him since then. I’ve been working a full time 9pm-5pm (Mon-Fri) IT job and a part time 11pm-7am (Fri-Sat) weekend job to help pay for my legal expenses. I’ve been exhausted, stressed, and a bit depressed for the past 4-5 months or so. My GF and I currently live together, and she hasn’t taken my depression very well. I don’t blame her to a certain extent as I had been been very closed off and unemotional. But recently I’ve been working on picking myself up and coming back out of my shell to get our relationship (and myself) back on track. 

For the past 2 months my GF has been exhibiting some unusual habits and behaviors. She’s been coming home extremely late on a regular basis, always on her phone, dressing extra nice when she goes out, etc. I knew something was off but I didn’t want to jump to any wild conclusions. The other night I asked her if there was anything she needed/wanted  to share with me. She beat around the bush saying that the question wasn’t specific enough and eventually said no, but I knew she was hiding something. Tonight I went through her phone and found that she’s been going out with a guy for the past month or so. I don’t believe that they have done anything intimate but they’ve definitely been seeing each other regularly for lunch, dinner, movies, etc.  

Just to lay out some additional details... I pay all of our rent as well as cable/internet and water. Ive also had her on my  health insurance for the past two years bc she did not previously have it and started showing symptoms for what turned out to be a somewhat serious auto-immune disease. Even with her being on my insurance as a domestic partner, my state does not recognize her as a spouse and so an additional $400/month is withdrawn from my check to cover the taxes associated to having her on my plan. 

I make a decent salary from my full time job and I don’t (didn’t) mind doing these things bc I love her and wanted the best for her no matter what. I’ve never held it over her head but now I feel so wronged. I refuse to be anyone’s doormat ad yet that’s exactly how I feel. I think I want to break up, move out, and remove her from my insurance policy as the this money could used elsewhere for my own personal benefit (my custody case, replacing my 12 year old car, saving for a house). My only hesitation is that I really do love her and I was optimistic about getting back on track.

WIBTA for immediately breaking up and shutting her down financially or should i try to salvage this relationship first? Am I overreacting?

dumping my gf after going through her phone