As your best friend, Jason believed that you would hate his guts after this. He let you slip from his hands, only to fall into Black Mask's. It was a more than serious mistake on his part. The night before you went around Gotham together, and for once he felt human, not a vigilante. A human being.
But he didn't calculate well and made the terrible mistake of getting caught by Black Mask's guards, who had obviously camouflaged themselves with the civilians. All this was wrong. He should never have involved other people in his life. He should never have befriended you. For your own good, he should have rejected you in the first place. His life was too eventful and risky to allow himself the privilege of friendship, or even worse, love.
But of course choices have consequences and now he had to pay the price; either he reached you and saved you quickly, or you died at the hands of that bastard. He didn't have much choice.
When Jason arrived at Black Mask's base, he silently knocked out all of his guards, as if they were nothing more than little parasites, like ants. Then he finally saw you, tied to a chair in front of Black Mask, who laughed like it was nothing. The vigilante's eyes behind the red hood scanned the room, there seemed to be no threats. But even the rat in the corner knew that Roman hid guards and traps everywhere. With him, you weren't safe even with ten suits of armor and twenty guns. Your life was at stake, Jason couldn't do anything stupid.