Colleague who I would also class as a friend arranged an end of term night out this week. Can't remember the last time we all got together. I was really looking forward to it. Throughout the evening however I noticed she didn't really speak to me at all but she was fawning over everyone else, taking selfies with everyone except me etc and as she'd organised it she was the centre of attention so, much as I tried to have a chat to people, all the attention seemed to be on her and her flitting from one person to the next so I didn't really get to speak to anyone for very long. In the end I left early. Next day she's posted around 80 pics, I'm in 2 of the whole group shots, no others, and everyone is tagged except me. I actually felt invisible! I'm usually confident in most situations and usually get on really well with her and all my colleagues that I know. I confided in a work friend who didn't come on the night out but didn't name the person but my friend knew exactly who I was talking about if that makes sense. She said she could sense that she could be a real bitch.I won't see her now until we go back in 6 weeks. How can I move on? I realise this person isn't a friend after all and isn't worth my headspace but as all the others pretty much ignored me too I've been quite upset and it's really knocked my confidence. She's also been a bit unpleasant over the past few years to a couple of other colleagues past & present. Any advice would be great. Thanks