@perplexed - most probably not. I get that they want to date but it's one thing to have a one night stand, it's another thing to get knocked up from it. I would think with all the money they have, they'd at least get all the protection they need.
The problem with people like Gisele is that they so successful and are so ádored' that they start thinking they know everything. Just like Gwyneth Paltrow. A life of privilege and glamour doesn't equal a life of intelligence - they ought to know the difference.