<human>: Hello all and thank you in advance!
I am a young gentleman. I get it. 23 is not the age to really be thinking about anything serious in my life.

I dated a girl about 6 years ago in highschool, we broke up but she has been my best friend ever since. I was talking with her about one of my most recent girlfriends, lets call her C, we broke up about 2 months ago. 

I noticed she was hanging out with some new dude (thanks social media!) who is not very attractive. I am a egotistical person, i know im good looking. But what i talked with her about is not the fact that there is someone new, but the fact that i didnt matter.

Thanks.

Can you give me the gist of the text in a nutshell?
<bot>: How do you get past the feeling of being replaced by essentially every person in your life?  This goes with all relationships, not just romance.