Scared of all men...except for daddy!

Erin
Does anyone else have this same issue? My son is 10months old and he is not having it with any man that comes around him, except for my husband. We thought he was just scared of a friend of ours beard, but today he cried when my dad got close to him. It is breaking my heart even though I know he will grow out of it. Please tell me I'm not the only one!