I think it is Polyphobia
That would be included in Entomophobia.
There is no specific name for this fear, although many suffer from it.
I think it would be fear of rejection. However, if he knows you like and or care about him he has nothing to fear when calling you.
I call it common sense. To be politically correct, the closest answer would be "vestiphobia" which is a fear of clothes in general.
Fear of travel: An irrational and unreasonable fear of travel is called agoraphobia.
it is "knight" ========= I would call him foolish. Fear is a healthy normal condition, designed to protect you from harm.
An Diabhal Am Fear-Millidh (Old Nick) Am Fear Mór Fhéin Am Fear Ud Am Fear nach Abair Mi (the unspeakable one)
Hippopotomonstrosesquippedaliophobia means the fear of big words, so he would be a hippopotomonstrosesquippedaliophobe.
Unfortunately, wether they know it or not, it is because of fear. Not fearful of you physically but fear of all the emotions that might come out of them. Fear can cause many, many problems and unfortunately sons and daughters get trapped by their fear.
Terrified, Paralyzed by fear, scared, Horrified
I would call it isolosomniphobia- isolophobia is fear of being alone, and somniphobia is fear of sleeping. You seem to have a mixture.
I would call it common sense. PS: there is no phobia around that, isn't everyone sorta afraid of that?