If you were previously married, do allow your former spouse to know about your personal/ love life?

Seemingly my ex wants to include himself in my love life.. he doesn’t know I’ll will be traveling overseas next year..

I don’t feel obligated to tell him anything ( honestly thinks that we’re still married despite her remarried) we discuss the kids , when are boundaries a problem? He arrogantly said I’m not getting remarried.. lol help he’s crazy !
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Has any of you read the question excluding @Sixgunsound yes we have kids together , but I don’t feel my ex should be in my personal or love life
If you were previously married, do allow your former spouse to know about your personal/ love life?
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