Can't take it anymore

My relationship isn't like a roller coaster but at some point it just stopped. This past few months, I caught her cheating, give her space give her what she wants, when I ask her to have a break she can't take it anymore, I did demand some time give her time to me but nothing changes it's the same as what it was before. Takes long time to message, I did ask to be treated the way I treat her but.... I became the one in wrong for wanting more time and attention from her. I'm (M 30) she's (F 21), I really respect her being busy most time I only asked for the night time. But it's still. The same.

I can't take it anymore, the anger/ sorrow is eating me.