Well if you are stranded after you have found a food and water supply all that would be left is a lot of free time, and if you are like most males you will wake in the morning with wood and if there is a woman there you will be thinking about sex through out the day.I think that it would be that way for most sensible adults. I'd be trying to get back to the shit I'm missing, and shit, let's be real, who the fuck wants to be stranded on an island? The OP's like, "Shit, we're stuck here. I can't hunt and fish, and she can. I need to bring something to the table. Hmm, I got it! Rape!"