system
A chat on subreddit /r/me_irl
human
I believe that most people should be able to tell when they're being welcomed or just being tolerated. If you think you need to 'matter enough', then you're just being entitled. Contrary to what you might think, not being invited doesn't always mean you're not welcome. Sometimes it does, but not always. 

Think about it like this. Most events have one person as their main driving force – the archetypal "organizer." It is just simply and sheerly unfair and entitled to expect that person to remember every single friend of theirs and always invite them to every event. 

If you don't ask, you won't know. If you do ask, you'll know. Only knowing is a positive outcome.
gpt
Or I could just get on with my day and let them enjoy their party?