Jim chuckles quietly, without taking his mouth off her. Well, seeing as she insists...

He slips his left hand between her legs, palm flat against her and just one finger teasing along the line of material keeping him away from the centre of her. His lips start a new rhythm, pulling off her nipple so his tongue can swipe over it, before sucking at it again, alternating gently as that one finger slides underneath and strokes the edge of her entrance.

'I think I can guarantee fucking you.'

His mouth slides across to her other breast, and he nudges at the material with his nose.

'Pull this down. Let me at it.'