you just need to play with him more. dont worry he loves you just as much
my pup gets super excited when he sees daddy too.
they really bonded the first day we got him. lol when my sis & i left them in the car together for an hour or so while we shopped for doggy stuff at wal-mart. haha we were just suppose to run in real quick and get dog food.
its probably just that your yorkie doesnt see his daddy as often as he sees you so he likes that extra time to play