My husband recently gave me his Facebook password for something, and while I was logged in, I snooped around his messages. I found lots of Emails to a female friend of his. They never dated, but I’ve always been a bit jealous of their close friendship. It wasn’t the nature of the emails that upset me, but the sheer number of them. They email each other every day, and share funny jokes and snippets about their day. He hardly ever emails me and when he does it’s usually boring stuff to do with the house or bills. Should I be worried about their relationship? Should married people be allowed to have friends of the opposite sex?