What would you do if you ex did this?

My ex and i hadn’t talked in 5 months. We finally did almost a month ago, we owned up to and apologized for what we each did to cause pain to each other and for the relationship to end. We did this for the purpose of forgiveness and to be in peace. We were talking just fine occasionally a few texts a day until one day I invited them to hang out at the beach a couple hours away. They said yes and proceeded to ask what if we leave a day earlier and spend the night there. I said that didn’t seem like a good idea for us right now but that i looked forward to spending the day at the beach with them. After this everything changed, Kinda stopped communicating and if they did it was very formal. I just stood for my boundary I clearly communicated I didn’t think that was a good idea right now but was still open to the original date we had planned.

Neither them or I have talked about getting back together, remember we only spoke to forgive each other for the hurt we caused but not once did either of us say let’s work on this again. I took the shot to plan that date at the beach because I want to hang out with them to “meet them again” if that makes sense because a break up signals the end of a relationship and if you ever do want to get back together it’s like starting from scratch not picking up where you left off. Since they suggested spending the night and getting upset I said no and that pullaway I can’t help but feel their intention was just to sleep with me. Why give relationship benefits to someone you’re not in a relationship with even if an ex? They have since since pulled away but will occasionally still text me. They ended up cancelling that beach date with me and I ended up going by myself anyway because I’m no longer revolving what I want around anyone else 💪🏻 they pulled away and I pull back into my life since I have a lot going on to give my energy to. I had allocated a bit of that energy to take that shot and invite on that date because I genuinely felt like talking to them again and hanging out but all that happened. I felt that if we would’ve gone on that date and everything had gone fine I probably would’ve communicated that I liked hanging out with them and that I wanted to keep doing so but we didn’t even make it to that point. I probably sound confusing. Any advice?