Ash,
WHO in the world told you cuddling was a sign of dominance?
Cuddling is a sign that they are getting along and have accepted each other!!!!! The nip isn't dominance either...it was J's way of giving T a message. I think they are going to be just fine together even if they are both boys......I've had several couples of the same sex, it's not that unusual

You are on the right path. Just keep putting them together for longer and longer periods of time....when you see one give the other one a lick, you can relax and congratulate yourself!