2+ years - try again or move on?

[seeking sanity]

Update: I went on a date last night with exW and if felt nice in some ways, and eerily similar to our last attempt at R in others. I purposely stayed away from any relationship talks and kept it light. She made some subtle overtures and when I left after dropping her off she said, it seemed weird that I was leaving.

I'm struggling because she is a vulnerable, emotionally challenged person. She's insecure and haunted by some demons I can't help her with. She seems to be trying to deal with them in her ways, but I don't know if she is equipped to do it. During our failed R when I expressed needs, she mostly withdrew, and could not meet them. I wonder how much of that was it being a mirror to her guilt she couldn't face, or how much was just an inability to give, period.

It's hard to know what to do. I love her, I don't trust her, I don't trust she won't make rash choices that will hurt me. I especially don't trust her when she's drinking and we both drink too much.

I'm dating a woman right now and in many ways it's perfect. She makes no emotional demands on me. I see her once or twice a week. We have fantastic sex, cuddle and have pillow talk for a few hours, and then I leave. It meets my physical needs, gives me a little escape, and doesn't make any emotional demands on me. She's a nice woman, but I don't have a deep connection with her, probably never will.

Am I creating drama for myself by reconsidering things with ex? The flip side is that I alternate between lonely when I don't have the kids, and exhaustion when I do. And life feels very hard most days despite my best efforts to GAL.