Sh--[No, that's not right. Izuku swallows, reaching out like he wants to touch his shoulder, but he draws back in the end.] Todoroki-kun... that's not it.

A-anyone would be lucky to have you as a mate. Just.. not like this. You shouldn't have been caught up in my rut in the first place. [The last thing he wants is for Todoroki to believe that he's the problem, when it's all Izuku's fault.] It. It was a mistake. It shouldn't have happened, that's all.

[It doesn't matter that Izuku would've picked Todoroki if he'd had the choice anyway. What matters is that he's robbed Todoroki of his choice with a truly terrible show of carelessness.]