I'm not really sure if something like this called 'quadrangle love'

I'm trying to find a manga where there are two straight couple at the beginning of the story.Let's just call it girl A is dating guy A, and the girl B dating guy B.But after spending time with each other, they notice that they dating the wrong person.So the story ended by guy A dating B and girl A dating girl B.

I'm sorry for my bad English T_T