Is my friend Straight or BI?

Lauren
Ok so I need some advice.
 I am bisexual and have been receiving mixed feelings from my friend (pictures on the left) for a couple years now when we get drunk together we make out (seems like pretty straight drunk girl behavior). 
Although, it's more than just making out in front of friends and then laughing. She would take me into the bathroom so we could be alone together and touch me and make out. On New Years she pinned me on my bed, touching me, and moaning and began to take my shirt off until we were interrupted by people coming in the room. 
Multiple occasions she has told me (while drunk) that we connect on a deeper level and that she loves me yada yada yada. And other times like in Atlantic City clubbing, she told me she wanted to have sex with me that night and that we would have amazing sex together.
Where is gets confusing is that when me or my friends have asked her (usually during drinking games) if she would have sex with a girl she always responds "Absolutely not" and "It's not my thing"
Can anyone help with this?