Let’s talk. What was your last straw?

What was the last straw in a relationship that you’ve been in that made you get up and walk away for the VERY LAST TIME and never look back? I’m just curious... I can’t wait until I reach my final straw in this “relationship”. I hate who I’ve become with this guy and it’s sad that we share a 3 month old child together now. I know I have to get out at some point because I don’t want my child growing up in a toxic environment where there’s always arguing, yelling, etc. I’ve had to “nag” so much I’m actually starting to get on my own nerves. I’ve never had to do this nor did I get like this until I got with him. Smh! Just venting and wanting to hear y’all’s stories as well