As a nurse wouldnt you think she'd know a bit about precautions (& ok condoms mightnt be 100%).
Plus is it not a bit funny she cant remember if it was Friday or Saturday - maybe she had "nights of passion" on both nights but if she did then how is she so sure its punter #2.
Betsy Og he's a man in his twenties you think he'd know a bit about precautions!