does anybody can explain to me why are men so afraid of his wife/gf asking abt their women colleague?

seriously, so what i might be jealous. but is it hard just to tell their name?

it's not they are having an affair or what as both of them are married.

really! it really hurts me when my husband refuse to give out names of his friend (men@women)

is it not normal for wife to ask that?why does he seems so bothered?

can anybody help?pls?