When he's being all sappy, sweet, tender, and loving but you want abrasive, aggressive, rough, and possessive.
When he's "I miss you, let's make love and then cuddle" and you want "come here you little slut, get on your knees and suck my throbbing cock."
When he wants to give you soft kisses, caresses, and deep longing looks and you want ass-reddening spanks, rope digging into your wrists, and hair pulling.
Yes. Its time for that again.