I work in a department of around 10 women. I organise meals and drinks for us and two of them always say no. Absolutely fine, some people don’t like socialising with colleagues.
This weekend I went out with just two of them. I’m close with them and they are my friends outside work. The person that always says no has messaged me this morning to say she feels left out etc.
Firstly she wasn’t the only one not invited and I’d never do a group thing and invite all but one person. Secondly I’m not going to keep going out of my way to invite someone who always says no and doesn’t organise anything herself.