My ex tried to do that to me, attempted to blame me getting a good well paying job and being home alittle less for her sleeping with a truck driver that is 10 years older than her father. I broke up with her and made her move back in with her parents. 3 weeks later she called and told me she thinks we were moving too fast and asked me for another chance, as it turns out the trucky had returned to his wife and left her in the dust.... i told her that sucks for her throwing away a 10 year relationship but it's not happening.