Elisabeth couldn't remember if she left a note for Remy or not, but they only did out of courtesy due to living under the same roof and there'd been nights before where either hadn't come home. So long as he knew she was safe, he wouldn't prowl the streets of LA looking for her; and vice versa. And thus came in the benefits of telepathy, because she was able to break through her swirling thoughts of lust and communicate to Remy she wasn't coming home any time soon in so many words...or less.
Between kisses and lip sucking and tongue rolling, Liz breathed, "Promise...he's not.. coming here...tonight?"