Outdoor for the first time! With pain to orgasm!

I arranged to meet up with a casual acquaintance for a little outdoor photo shoot. The weather is just fantastic at the moment and I wanted to take a pair of beautiful new pictures in nature. I noticed his eyes wandering all over my body all afternoon as he photographed me. He probably finds me more interesting as a model. I could see that especially when a thick bulge appeared in his trousers during the photo shoot. He cant hide it anymore, so I give him a sexy look and make him a little hornier. So I take a step towards him and grab his cock with all my might. He finds it hard to resist. I realise how excited I am, because fucking in nature for the first time is exciting when you get caught....