Okay, let me just be a huge theater nut for a minute here.
I'm fully team multiple couples, mainly due to a trope in theater. In plays and musicals especially, there is the tropes of the two couples, the alpha couple, both main characters who are passionate and dramatic and kiss at the end and the Comedic beta couple, made of less plot-important characters, and they're fun and silly and not taken very seriously.
I love Beta Couples
They're always some fun twist, like it's usually not just two conventionally attractive young people who are relatively alike. They'll be dramatically different but still get each other, or they'll be both stupid and be stupid together, or they'll be a rekindling married couple, or (my favorite) an older woman who thinks she's "past her prime" and won't find anyone, and then a very silly person will show up and be like "Oh, hello I think you are the absolute bee's knees. Let's use a bunch of really weird gifts and metaphors to express our love"
It's my favorite.