Ever feel like the odd man out?

I’m at a party where everyone knows each other but me. I’m the newbie. No one really wants to interact with me. I’ve tried. I’m a very social person. It’s literally my day job to be social. But here I am on the outskirts not feeling like I belong. And the guy I’ve been dating just left me behind. Hasn’t checked on me in more than an hour. So I’m sitting in the hatchback of my car drinking alone. Maybe I’m not as social as I thought.