Is it bad to go out with an Ex

Problem/Goal: I became in contact with my ex recently, not in a romantic way. We know well that things between us have ended, and we chose to stay friends, leaving the past behind—Not until we went out together once.

Context: I had an ex, although 3 months lang yung tinagal namin, to me—those 3 months were beautiful. Sadly it didn’t end well and we stopped contacting each other for almost a year. We got back in contact because in-approach niya ako and wanted to reconnect (not romantically). I agreed too since we didn’t have anything left anymore and we let go of the past long ago pa. In short we were friends. Isa pa, nalagay kami in a tight spot where it was too awkward for us both, so being able to freely move around was the reason for our reunion. Walang malisya.

Nag iba lang when niyaya ko siyang lumabas na samahan ako somewhere. It was just supposed to be a friendly thing between us kasi matagal na namin iniwan ang nakaraan naming dalawa. The outcome of this wasn’t really good kasi we both got awkward tuloy. Idk why naging ganito, I tried to be myself naman pero awkward talaga, and the whole time (and the next days) she’s been avoiding me.

Have I been so oblivious to our boundaries we both should’ve had since mag ex kami? Haha.

What should I do para hindi kami maging awkward? Kasi nga we decided to be in contact again kasi we are in a tight spot that kind of requires us to interact from time to time.