Matt and Elektra.
I only watched the first season of Daredevil in December/January, in fact I had never seen anything Marvel related until October when I decided to just do the whole lot in my free time at uni. I shipped Matt with Claire last season, and when that ship sailed and you could see that Karen liked Matt I was like 'nah', cause honestly I just didn't feel like there was any chemistry or anthing.
So I watched season 2 in a week, the first few episodes with Matt and Karen I thought was okay but it was waaay too cliche and cheesy. And then Elektra comes in and BOOM, I have a new OTP. Like at first I thought she was just bat**** crazy but then when they explored her backstory and her and Matt's relationship in college, and then the last episode... wow. It really broke my heart cause in the end she made her choice and then they didn't get to see where it could go.
I really hope that the writers don't try and shove Matt and Karen onto us again in Season 3, that would be so insulting to Elektra's memory and her character.