Before 50 Shades of Grey came along and made erotica seriously mainstream, there was the slightly-subversive guilty pleasure that was the Twilight Series. This soft-edged teen-targeted vampire romance series became surprisingly popular with the older ladies, and it opened the doors that would make reading erotica and romance a more socially-acceptable past time.
Love the fangs and looking to sink your teeth into a new series or two? There's still plenty of vampire romance novels out there. These ones, however, aren't just titilating. They're downright hot.