Clarke and Monty - The 100
Clarke and Monty's relationship is incredibly pure and underrated. If you're looking for a relationship to prove that males and females can be just friends, stop looking at Bellarke and start looking at these two.
Alex and Meredith - Grey's Anatomy
Alex and Meredith went from being begrudging fellow interns to each other's person. Alex's character development plays a large part in his friendship with Meredith, and we're confident that these besties will stay that way for life.
Penelope and Schneider - One Day at a Time
Penelope and Schneider are best friends who rely heavily on each other. We wouldn't be opposed to them taking the romantic route, but there's been no indication so far of anything other than a strong friendship between them.
Helen and Max - New Amsterdam
This one is a bit of a toss-up because there are a lot of fans who would disagree about the nature of their relationship. But there's no denying that it has been strictly platonic so far, as Max is married with a baby on the way.
Barry and Caitlin - The Flash
To be fair, The Flash did actually tease these two quite a bit in the first season of the show. But they seemed to go back on it as Barry married Iris and Caitlin has become one of his best friends.
Kat and Alex - The Bold Type
One of the best moments on The Bold Type was when Kat drunkenly kissed Alex and she said, "Nope, shouldn't have done it." There wasn't even awkwardness to it as the two are such good friends and it was a comical scene above all else. It also proved that friendship is all there is between these two, and most likely, all there will ever be.