bihter ! He like Nihal as a sister, he never loved her, just pity her and doesn't want to make her unhappy cause she is fragil. He thought bihter was strong and didn't understand she loves him so much ...

bihter only <3

I think both, but in a very different ways.

Although I love Nihal and Behlul as a couple, here I'd say both, because he loved both of them, even though it was in different ways