Fuckstruck
Not head over heels in love, but heels over head in bed. Madly in lust with someone. Unable to think clearly as a direct result of getting laid.
Friend 1: "how does Anne feel about David, I haven't seen her forever"

Friend 2: "well I'm not sure she loves him, but she certainly seems Fuckstruck. I don't think we'll see much of her for a while."