Why do girls i never met get jealous of my Admirers?

Do you perv at other women? did she have any reason not too trust you?? a lady ususally gets jealous of other admirers cos shes a potential threat..a rival..if the man plays on this it can really piss a girl right off..it might of been the final straw, and if the bunny boiler is the local slag,well we all know were a mans brains are??