Anyone in a similar or gone through this sense?

I logically and emotionally i understand we do not work as we were,nor as we are in our lives.

In the future, like talking years who knows. Nor would we work in a strictly sexual manner.

Her initiating interactions with me stem from our pets,who I now consider mine, wanting my help or time with misc things. I no longer answer and see what she says on voice mail.

Or vent about her last failed relationship. I set boundaries and state that I also will get to vent about my dating trials.

But I come away from those interactions not really feeling heard.

A band I love is playing and I didnt want to go myself, yet. (Yes I am doing a lot more things myself and putting myself in social situations.)

Told her i got tickets you get the drinks and us a snack. Thus removing "covert contracts" if you don't know them look them up.

To which she said "ill save the date!" Then " you'll have to remind me near it as my days run together"

I never replied to that. Nor will I remind her and only bought myself a ticket. If shes not excited enough remember or to place a reminder in her phone, that tells where she stands.

Im still learning about boundaries, what i need, and what it is post divorce to interact in a healthy way with her.

Am I missing anything,or being passive-aggressive?