Used Ex Returns

My girlfriend and I having been dating for over 5 years now but a few months ago we decided to separate, and we also did so on good terms. We had no contact with eachother for 3 months and it felt good to finally move on! I even started talking to a few other women. About a month ago she came back into my life and we’ve been seeing eachother casually ever since. We’ve been open and honest with one another about our time apart, and it turns out she was seeing another man just 2 weeks after we separated, which I found strange considering I hadn’t moved on for at least a month or more.

She initially described him to be a mistake and rebound, and that she was glad to have me back in her life. We’re on track now to possibly get back together, but recently she described the nature of their relationship together.

She mentioned previously mentioned he was “inconsistent” but upon elaboration it turns out he was actually just seeing her for sex and only sex. Legitimately the only times he would message her would be to come fuck her, or to take her on a date and then fuck her in his car. Apparently he was “selfish” and upon elaboration that was because on longer drives he would want her to give him road head, which she apparently obliged each time. When she described him to be “disrespectful” it turns out it was because he stopped returning her calls after she complained about not being in a relationship with him.

As I reflect on this I can’t help but think I’ve been played, as she’s been fucked, used and dumped like a cheap slut, yet I’m the one stuck with potentially wifing her up. Like I mentioned we’re in a pretty solid track towards marriage now and I’m not sure how to think or react. I love her but to me, her value as a woman, wife and life partner has plummeted beyond saving.