SUPER complicated situation that needs to be helped with?

i got a new job about 3 months ago.my first day at my new job ive noticed a guy. just by the way he looks at me.i know rite away that he likes he..hes charming, funny, cute and such a gentlemen ( lets call him R) R and his best friend F work at the same place as i do.and i always work the same shift as they do.so we literary see each other everyday. R asked for my number and so did F. F told r that he likes me.F asked me out..i said yes.cz at the time i wasnt sure if R likes me or not..ive dated F for 2 months..and all that time..ive always been having feelin for R..we started to talk more and more..doing more stuff together..till when it reaches the points where i realize the person i rly love is R..couldnt hide my feelin anymore..i break up with F..cuz its not fair for him to date a girl like me..he deserves MUCH better..i dotn wanna stay with hjim tellin him that i love him while i clearly know i dont...while i know that the one i love is R. so we broke up..F is very sad about this..i see him eveyrfday at work.things get harder..me adn R started going out more..we kissed,,held hands...playing with each other..both of us know that its not gonna work either way( if he choose F then he will ahv eto stop doign all the things me and him have been doing..that way im gonna be sad, R is gonna be sad, F would STILL be sad cuz im not gonna come back with him either way) ..F still doesnt know that me and R like each other..if R choose me then F would be sad, R would aslo be sad, and i would also be sad cuz i know becuz of me their friendship is broken.) i tried to tell R to just forget about me..just dont care abot me and stay with his best friend..i know im gonna be hurt as hell..i know im gonna cry almost everynite for the first serveral months( this is the first time i realize that i rly EVER love some one) .......but atleast i know the one i love is happy...but the best friend doesnt wanna do that!1 CAN SOMEONE PLZ TELL ME WHTA WE SHOULD DO... omg :(