More than a friend- FxF or FutaxFemale

So this is inspired by a nightcore song I heard while on my way home from work. This is either a femalexfemale or futaxfemale idea. In either scenario, my character-either one of the girls in the fxf or the futa in the futaxfemale- has a friend that she met while dating an ex boyfriend. They kept in touch even after the breakup because my girl developed feelings for the friend. She has these sexual feelings for the friend, particularly after girls nights where they change into comfortable clothing around each other and she gets to look at the friends nearly nude body. 

The bones of the rp is basically the two dancing through a web complicated feelings, one wants to be with the other romantically while the other thinks fondly of the other but not romantically. Not at first anyways. 

Song for reference 

https://youtu.be/rv1Aqj4_MC0