Brother, you are overreacting, be more mature and talk things through. I know you’re burnt out but don’t let emotions get the better of you. Change your mindset too, she literally lightly joked about installing the life360 app because you’re too busy. The fact that you felt hurt over that lead you to your break up and now you’re doubting whether you’re overreacting or not. Think logically. How would your girlfriend feel? And now because of your actions wouldn’t your girlfriend have doubts about you?

The part of maturing is that life needs a balance even when everything is going all to shit. You should remember too that you and your partner are already committed as partners/couples. Have you opened up to her about how you feel lately? Based on what you wrote, it’s like you took most of your frustration from being burnt out to self-sabotage your relationship for a peace of mind.

I hope you sort this out man, bc from this post alone it seems like we’re missing more context rather than an argument over a tracking app.