"Daddy please don't, it wasn't his fault, he means so much to me," Derek sang, lips against Stiles' ear. He continued, pausing to press the occasional kiss to Stiles' cheek, "Daddy please stop, we're gonna get married..." The grin returned and he slotted his lips against Stiles'.
"You'll be eighteen, when we do." Derek stroked Stiles' cheek. "And people give each other promise rings. We can tell him it's one of those if you want. Or you can tell him the truth. If he won't let me back in the house I'll put up a tent in the backyard."