<human>: Summarize the given text in a few sentences.

So I have this group of friends and this girl Kate is part of the group. We weren't close friends, just having mutual friends meant that we hung out a bit. 

Over time we started talking and realised there might be something between us so we went on a couple of dates. Unfortunately, she called it quits after a while saying it wasn't going to work. We weren't serious so I figured, no big deal, thanks for being honest. 

She said we should just be friends. Now, I know what that usually means from past experience with exes but she was really adamant that we be friends who talk and hang out. So we kept talking after that and it turns out, she's a pretty great friend to have. We did have a drunken hook up one night at a friend's place after this but we decided it would never happen again. 

Then I noticed one day (a long time after the above incidents) that her responses to me started to become shorter and shorter until all I got were one line generic responses (both in person and texting). Usually we would both be initiating conversations with each other but I found that I had to be the one to initiate contact lately. I also found out that she would say she was unable to make it to our mutual friends' parties and then end up going after I say I am not going (due to entirely different reasons). 

Basically, I am really confused about this complete 180. I have mentioned this to her before, not in a confronting manner, but she brushed it off as me misreading things. What do you guys think? Am i being paranoid or is there something weird going on? To clarify, I do not have romantic feelings for this girl. I am just disappointed because it feels like I am losing someone whom I thought was a good friend and I do not know why. 

Help me solve this mystery reddit.
<bot>: Dated a girl for a bit, ended up becoming good friends but now it feels like she is ditching me as a friend.