Sorry, man. Sounds like you're in the friend zone now. You have an outside shot if you completely blow her off and make her think you don't give a damn. But I wouldn't bother. Ladder Theory
She's banging your best friend. He took the 200 dollars you gave her and bought a hotel room so he could tag her. But that hotel room only cost about $69. It wasn't a filthy-ass hotel room like where you take a prostitute or anything, we're not talking Hilton or Marriott or any of that ****, but possibly in the range of a Motel 6, Super 8, etc. The bottom line is she's obviously turned her eye to another, and you would be wise to install new drapes above your kitchen sink, lest boll weevils infest your tapestries in lieu of wandering eyes and wondering hearts.
Yeah, if its been 3 months and it hasn't gone anywhere you def. in the friendzone. Just move on, plenty fishes in the sea.
Doesnt look good...you need to stop contacting her. And if she contacts you, dont be so quick to respond.
First mistake was giving a chick that ain't your gf money. Don't give a girl your trying to get with a cent-take her out or whateva but don't be no Superman. Don't give her a dime till she becomes your personal dime.
She's not interested. Get over it, and stay away from her. If she comes to you for help, in the future, politely decline her request.
This thing is oh so true and is what happened to the op. Yea, it is NEVER a good idea to give a girl money that is not a) your fiance or b) your wife. Been there and done that, lol.