why on earth would she want to trap some stranger she's never met? do you think you are that much of a catch?
I doubt many woman have a desire to saddle themselves for life with a guy they don't even know!
women who intend to 'trap' a bloke do it for two reasons - the baby itself is usually neither of them - its for love and money...i assume neither applies to you.
if she was intending to become pregnant, i expect she wants a sperm donor, not a dad.
use protection and take the condoms home with you.