"The Improbable Virgin"

"A few hours ago I thought I was alone. It's nice not to be." She gave his shoulder a little thump with her fist, pulled his head down and pressed her lips hard against his cheek. "Welcome back, Willie love. And please - don't do it again. I've never felt so lonely."

Modesty Blaise to her closest friend in "The Improbable Virgin".
(My thanks again to Susan de Guardiola for convincing me I'd love Modesty.)