Similar thing happened to me. It happens. They wanted to break up months ago and didn't want to hurt your feelings. And then you're going to want closure. It's going to be tough but deleting all her photos and working out would be my advice. It's going to be a long road. Also control your thoughts, the bad thoughts will get you into depression aka sad feelings you'll feel everyday you can't get out of. I still think of her after 6 months now. But I just think, it wasn't meant to be. You'll be fine

Hey bro my girlfriend cheated on me on the day I went to the hospital with a brain aneurysm

Avoidant attachment or personality.

Women have very different types of brains from men. For you, love is a commitment. Love is an action and an obligation. For her, love is a state of mind. Love is an emotion, and a feeling. Women often leave men because they aren't feeling the feeling of love anymore. It wasn't lying, she did feel in love at the time, she just started feeling differently. Men don't experience love the way women do. Look up YouTube of Pearl Davis, she is a comedian who talks about this kind of stuff to help men feel better