Yep keep him/her where she is will be fine. One rooster in the flock will not cause too many problems unless he is super randy and you only have a couple of hens. We had one rooster and three hens and except for the month his hormones hit and he first discovered mating (and was dreadfully rough) he settled in to be a great protector and gentle with the girls.
He did however get too protective and started to attack the kids and to a lesser degree me. We started holding him to train him we were in charge with some success but had to rehome due to noise complaints.
My advice though would be to make a real effort to hold and carry him now before he starts getting territorial, make sure he knows you are top chook now, don't wait till he becomes a problem first.