That touching was affectionate, more than what straight housemates would do, IMO. That, and other things made them seem like a couple.
I'm thrilled to see this sort of commercial. I've waited over thirty years for it. It did rely on some stereotypes, but they do that with straight people too. It's progress to be treated equally, even if not treated perfectly well.
I think its a step in the right direction - why make it more gay just for a Tide commercial, its ok as it is, if they both stripped down to their tighty whities with a big package it would just never get shown and receive complaints