Slept Wiyh My Ex Husband..... UPDATE!

So some of you may have followed the crazy shit that happened with my ex husband's abusive girlfriend (ex now). If you haven't read it I'm sure you can scroll through and find it. Quick update I did end up calling the cops. We made a police report and are getting retraining orders. When he got back to his house she had already packed up her shit and left. He came over last night to see the kids and put them in bed. We sat on the couch, drank wine and ending up laughing about everything that's happened. Then we laughed about the coronavirus. We know it's serious btw we were just laughed about how crazy our life's have gotten. This part is where I know I will judged and trust me I regret. We slept together for the first time in 4 years. I feel so guilty about it. Maybe we were both just looking for comfort during this situation. IDK. I called my sister to talk to her about it this morning. She said " Maybe this is your chance to get back together". I told her I don't think that's what is what was. She then said something more on the lines of "You guys were really young when you got married. You already had a kid. You may have not been ready. Maybe you needed this four year break." I don't know how to take that... I know you all may think I'm a slut... I feel like one. Even if it was even a small possiblity, he needs time to heal from that crazy bitch. I'm definitely confused at the moment. Seems I solved one problem, then started another.

UPDATE: So I talked to my ex today. He told me he does care about me and he's just as confused as I am. He does want time to heal from that crazy bitch and he says let's focus on the kids and maybe try to work out our feeling separately.... My mind is racing. Has anyone ever gotten divorced and got back together... Where you confused at first. Did this situation happen to bring us back together.