LFAS Where guy saves woman from (rape?) and they fall in love. Eventually she cheats on him or something and it turns out she is infertile.

[Mattfourseven]

I think the guy saves her from being raped and they end up being together. But she's a slut and *also* had been raped a different time so she ends up being infertile. When she finds out that she's infertile, it causes her to start being a slut again. They break up and he moves away but eventually she finds him and I think they get together again.