Oh! Because Rowena and I arrived around the same time, before Sam was here. Once he got here we were already comfortable and I promised to protect her, so it made sense to stay.

[ It wasn't a case of Jack going one or the other with them both in front of him. He was already settled with Rowena and he was very serious about his promise, as he is most things. Sam understood that so he just stays close to them. Jack can protect them both this way, and they both know too they can pray to him if they get into any trouble. If Sam was there first, Jack would be with him, it was that simple. It never occurred to him to get his own room.

Jack looks genuinely startled at that, his eyes widening slightly, and then his eyebrows furrow, confused. ]

Jealous of ... what?