They have religious restrictions that limit physical contact in premarital relationships. Dating is still linked to its Western origins, which implies underlying expectations of sexual interactions — if not an outright premarital sexual relationship — which Islamic texts prohibit. But Islam does not forbid love.

Is it haram to date someone who isnt Muslim?

According to islam the only romantic relationship a man and woman can share is marriage. All romantic bonds are confined to the framework of matrimony. So it is basically not allowed for any adherent of islam to date a girl without getting married. The technical answer is, yes.