নমস্কার just need a bit help for my friend.. plz <3

so there's my friend named flor. she really loves a guy.. who is also her so called friend.. but the guy loves another girl... and the girl he loves isn't really worth it and is playing with his feelings.. flor really want to tell this to that guy but she knows that he won't believe her.. flor also wants to tell her feelings to her friend but she's afraid to lose hi
m as her best friend coz she knows he only loves his gf..

flor broke his friendship with him coz she just can't see him with someone else... and i guess that guy didn't seem to care but she really loves him and i know it..

what should she do??