is there any drama or movie where the FL ends up with a supporting or recurring character? and not with the ML. 

i am not talking about the SML (second male lead getting the girl trope), just like one of the characters who weren't all that important and no one saw it coming that FL with end up with them. 

is there any show like that? any country will do , any language , any length of eps or movie will do 

doesnt have to be a romance series. could be any type of genre

I only know one this kind of trash >> We Made a Beautiful Bouquet 
Man I must've been in a very good mood on that day. I gave it a 6.5! This kind of story is basically like pulling someone up at the top of a tower just to throw em off moment later. I found it funny that people praise it for a Realistic(what??) ending. I'm absolutely not sorry for my language there btw.

Similarish to Elite i can only recommend you movies with this troop:

A Moment of Romance - it is similar to "We made a beautiful bouquet".

More than blue - quite sad movie. There is also a taiwanese drama about this, which i have not seen but should also be something for you ->  More than blue series

Not the FL, but In Marriage Not Dating, the 2FL ends up with some American guy who appears out of nowhere and she is pregnant with his baby..

 Ichika Kaneki:
is there any drama or movie where the FL ends up with a supporting or recurring character? and not with the ML.

i am not talking about the SML (second male lead getting the girl trope), just like one of the characters who weren't all that important and no one saw it coming that FL with end up with them. 

Might depend on what you mean by "end up with". In Moon Lovers: Scarlet Heart Ryeo the FL first falls for and has a relationship with the 8th Prince (I consider him the SML) then falls for and has a relationship with the 4th Prince (the ML). The 3rd Prince is her enemy, the 13th Prince is her friend, and the 10th and 14th princes have one-sided feelings for her. In the end, the FL marries the 14th Prince so that she can leave the palace and the 4th Prince after he becomes King.

 AH :

Might depend on what you mean by "end up with". In Moon Lovers: Scarlet Heart Ryeo the FL first falls for and has a relationship with the 8th Prince (I consider him the SML) then falls for and has a relationship with the 4th Prince (the ML). The 3rd Prince is her enemy, the 13th Prince is her friend, and the 10th and 14th princes have one-sided feelings for her. In the end, the FL marries the 14th Prince so that she can leave the palace and the 4th Prince after he becomes King.

thats like the ultimate sibling reverse harem lol. but yeah definitely falls onto the trope i asked for. thank youuu

 Ichika Kaneki:

thats like the ultimate sibling reverse harem lol. but yeah definitely falls onto the trope i asked for. thank youuu

For real. And their dad nearly married her too. 

Also, I don't think this is what you had in mind, but Extraordinary You is a drama about characters in a webtoon that become self-aware. The FL of the drama is a supporting character in the webtoon and the ML of the drama is an unnamed extra in the webtoon. 

 kura2ninja:

This Japanese drama: Love Song

does she end up with suda masaki's character?

thanks for the recc ^_^

@Ichika Kaneki: Yes :)

I think, drama The Master's Sun fits here. I watched it a long time ago, but as far as I remember at the end FL suddenly meets mysterious man she had a connection with when she was in coma