It's possible that Sam's thought about this a few times. Nothing serious because he tried his best not to dwell on the things that couldn't be, but it crossed his mind a few times.

He wraps his arms around Gabriel, holding him close as he tilts his head to slot their lips together better. It felt...really, it felt good. Felt right. Maybe that's just the Grace surrounding him reacting to it's proper owner, but it still feels like he's where he belongs.