What did my coworker mean by this

Missing context but my assumption is that they think you shared something in a way that suggested you weren't sure whether it was a good share, or otherwise indicated hesitancy or uncertainty about whether you were engaging appropriately. My read is that they are telling you it was a good hang, and that they want to reassure you that they did not find it unpleasant or uncomfortable.

I obviously don't know the context that would cause them to want to offer that kind of reassurance.