My boyfriend and I did something similar while on holiday recently, we'd gone for a hike and found this fantastic lake, I stripped off to my underwear and went for a swim to freshen up, he started taking pics of me telling me to take my bra off, so I did, and I didn't stop at just my bra, it was really nice being naked and I kinda liked showing off my body to his lens. It ended with me giving him a BJ and then having sex. Perfect. Loved looking at the photos later, I looked so sexy.