Ok, so I couldn't just say 'thanks' eek I'm bad, I know.

I sent him a text: "How can you afford to give us an extra $100 if money is tight? Just wondering, you don't have to answer that, but thank you."

STBXH - GF, truth is I can't, but I make stuff work. I'm truly sorry for all the wrong I've done. I'm ashamed of myself most of the time. I have to sleep. Gn."
Me - Sorry, didnt mean to disturb you. Gn
STBXH - Never disturbing me. If you ever want to talk or text me, I don't care when or what time. I was a garbage H, but maybe I can try to be good in other ways to you. I'm sorry.
Me - no response
STBXH - Truth is everytime I see the kids, I see you, especially S14, and I hate myself for the irreversible damage I've caused. Before I die, you will know I feel remorse. You are a great mom and you were a great W, and I was a f'ing fool, and I hate the fact that it's past the point of no return. Gn, GF.
Me - IDK what to say. Gn

That's all.

I really don't know what to say or think.

Just wanted to get it out.

Getting over a painful experience is much like crossing monkey bars. You have to let go at some point in order to move forward. ~ Joseph Campbell