Why are women like this?

I admitted I fucked up. I didn’t cheat though. I didn’t even sleep with anyone until yesterday and I’m sure she’s already been with more people than I’ve been with in the past 8 years. But she’s mad at me. I just don’t get it. I want to get married and start a family. I have a good job, an education, a positive attitude, a good sense of humor, I’m not too hard on the eyes, I’m tall, lean and very muscular, and I always stay in good shape…Why can’t I find someone I can settle down with?? Why do there have to be┬áissues with what a girl did in mexico or with her exes, and why do I have to hear about it? I assume that everyone has done SOMETHING dubious in there past…Why do I have to hear about it? It COMPLETELY RUINED the last two years of relationship for me! I thought she was the one. But she had to tell me about all this stuff she had done with other people, but would never do with me, and for the first time in my life, I felt insecure…I’ve never truly experienced that. She had been with so many guys…even two at a time…I’ve always been comfortable with who I am but this started making me question my self-worth…and I started “talking” to other girls, and it made me feel better but I never did anything with them…Now I feel like a huge tool because I bought two wedding rings for the same girl in the last two years…and now I’m single…wtf?