What to do about my “friend” 😒

So my friend knows that I like this guy for a while, we all work together.

I then find out she’s been hanging out with him “just being his friend” she said and then she proceeds to tell him that he should talk to me and get to know me… so I get this friend request from him which was totally random I thought (I have not accepted it yet because I can tell it’s something fishy)

The next day she tells me that she talked to him and got the vibe that he likes her but she said that she doesn’t like him

She then hides the fact that she was at his house alone for a few hours after work at like midnight… she hid that from me but we have each other’s location so obviously I asked about it and all she says was that she was only there for a few minutes and that he wanted to show her his new apartment (but if she said she didn’t like him why would you go see his apartment in the first place right!?!?)

Idk what to do because she’s my only friend :(( but she can never handle not having the spotlight on her and now I’m forced to move on because god knows what they did smh

Also i apologize if this sounds rushed, writing this before I head into work oh boy