I need help, i do not understand if a HB10 is really interested to me.
he broke up with his former Boyfriend 20 day ago and now she is free

So i started chatting on FB
We often chat and she seem happy to do it and she often ask where i will spend my party night.
But i can not understand some things, can you help me?
1)she has over 1500 Facebook Friends..
When i contact her on chat she always reply and we joke and have fun(i use negs, funny stories, i amog her former BY) and she wrote or push "i like" button, only on my page(she never post in any page)..it's an IOI?
2)Last friday i met her in a party
She was dancing with 3 girls(her friends) and a stupid male who wants to fuck one of them (MF in the draw)
My friend and i were talking and she stopped dancing and talked with me only for 2 minutes, then he came back dancing(i wanted to talk but her friend caught her)
its an ioi?
(edit: i drew a pic but i can not post it: so
HB10
MF F
F F
Me MyFriend