it wouldnt bother me if there was another sub involved at all, sometimes i think it might be nice.
the only problem i might have would be if IH decided to make her his ''little girl'' i think that possibly might make me feel a bit insecure partly because im spoiled and because neither of us have had that dynamic in our relationships previously, it's something special that only we have shared so im not sure id like the idea of someone else sharing his affection or attention in that way.