Behavior with ex/exes versus what you give now (details inside)

If you’ve been burned in the past, are there things you did before that you don’t do now for your SO?

Do you wonder if your SO asks themselves, why doesn’t s/he do those things for me when I’m The One now?

I am guilty of some of this and I have no good reason to explain myself. It’s not that I think those things aren’t important to my SO also and it’s not like I think they won’t be appreciated. It’s something else, maybe something worn down, expectations of reciprocation I no longer have faith in and I know it’s not fair to project that. Ever wish you hadn’t treated others so well so your current SO wouldn’t have a contrast? Ever think you’ve just gotten lazy?