The best one I can think of is:
Three Dads One Mom - All three of the mls fall in love with the fl, and it is not immediately apparent who is going to end up with her. Spoiler if you want to know who (it's a big spoiler so only look if you actually want to know): the fl ends up with all three of them. The drama ends with the fl and her daughter permanently moving in with the three guys. And an end-scene a few years in the future shows that the daughter considers all the of the mls her dad.
It is an older drama. But I watched it for the first time recently, and in my opinion it has aged pretty well. It still holds up . :)
