Jealousy is considered an immature emotion ba<x>sed on mistrust or a lack of self worth. If you aren't trust worthy, then no it isn't normal. If you are trust worthy and he knows that, then he's more mature than 95 percent of the men his age.
yes. just means that he trusts her...
id get pretty jealous
Really depends if you think guys and girls can be friends with out sex stuff being an issue.
He doesn't ?. I would.