Does anyone else have this? My 18 mth old is fine and a normal 18 mth old - until Dad's around. From that point on he has a tantrum whenever Dad leaves the room, will only want to go to Dad if he wants a cuddle, wants to lead Dad around the house for hours and freaks out if he can't etc.. He's fine and loving with me the rest of the time so I don't feel particularly hurt, but it does mean that family time often feels spoilt. It's been going on min. 6 months and I'm worried that maybe there's some attachment problem somewhere ...