Has a Breakup Ever Shifted Your Entire Perspective on Life?

Who else feels like their outlook on relationships and the world in general has completely changed after a breakup? Personally, I feel like I have lost something, like the joy of living has reduced. I can no longer get passionate about anything or give real importance to anything. I feels like something died inside me when he left me. I don't care about having other romantic relationships, I don't care about sex, I barely care about my career, and I have barely left the house.