I will go back just for sex but not for the relationship. I set boundaries. Like I have a Gemini ex and I know if I have sex with him, he’ll force me back into a relationship with him. He’s done it tons of times to me. So I refuse to sleep with him now. My Scorpio ex, I can go back to when I want and just have sex and he’s satisfied with that. He doesn’t bug me about a relationship.
I don’t go backwards once I’ve made my mind up though. Sag take a lot, we put up with a lot and give plenty of signs when we are unhappy. If it doesn’t get fixed and we get ignored or taken advantage of, we leave. You can drag a Sag through mud and we would let you, if we think you are what we want and we are in love. It takes so much for us to leave, but once we make up our mind, there are no take backs.
You’re ex might have someone else that treats them better already, so watch out for that.