"Didn't know you thought of Beacon Hills as home anymore." And if there's a hint of bitterness in his tone, he's going to ignore it. Isaac wasn't sure when, but somewhere between Stiles being the annoying human and an actual pack member, the Beta had developed feelings for him.

And then Stiles had been bitten and he'd up and left not too long after.

Isaac doesn't even flinch at the defensive tone; if he's honest he can understand it. But that doesn't mean he planned to back down. After all, "you left."