French thriller, with a VERY French premise:
Successful Julien sees his family off on holiday and at once becomes drawn into a risky relationship with Angela, whom he spies outside the cafe opposite his office. When he later finds she is to become his son’s new nanny he rightly starts to worry there is more to the relationship than he bargained for.
Johnny Moronic’s film clips are here.

Sacre bleu is she hot, & still doing sex scenes up to today
And is that a Heche I see coming outta the tub?
I thought that bare foot was a dick in the thumbnail of the 2nd picture.