Well,

long story very very short, I found out her ex had huge dong, like 9``(23cm++) and thick. And I found out she is not satisfied with sex with me. I imagine it's because of her ex.

Well, I can't accept that. Im 6''(15 cm)

I rather go on my way... this is too much stress for me to handle. I rather go on my own way. I'm pretty disgusted about the fact I can't satisfy that girlfriend because her ex was twice my size. Fuck that, really

Why she was with me? Well, I pay the bills, the restaurants, the conversation. I make her life easier. AKA beta male.
This is the concept of what women have to offer? Used pussy. Fuck off