What if part of the reason Peter likes being around Jonah is because he is attracted by the waves of incredible loneliness and despair coming off of Original Elias who is trapped as a helpless prisoner inside his own body?
mmm, I think this would be ESPECIALLY interesting if, for at least the first while, peter thought elias WAS dead but knew as a lukas about the body hopping
for a long time he works on jonah thinking that jonah has this gigantic, obvious weakness radiating off him, and the whole time jonah is aware of what Peter thinks, but he has a surprisingly active social life, actually
something about an added benefit of stealing bodies meaning fake bait for lukases is so appealing, like an anglerfish that pretends to have no friends