This is how it happened: Pete Doherty was sent to rehab a few weeks ago. Kate Moss went to visit him there a few days ago & it happened!
The couple were sitting on a bench in the garden & they got too cozy during their session.
People realized that things were getting heated & thus so did Kate & Pete.
Kate had already made around 4 low-key visits to see Pete during his four weeks in the clinic fighting drug addiction, but this sort of thing never happened before!