Talking about dilema, I think nothing can match up with the one I had to encounter. This happened soon after I got newly married and was very keen to have sex with my wife. We being living in a joint family it surely was an uphill task to get an idle place and adeqaute time for all this. However one day I purposefully skipped office and chose the afternoon time as the best slot. So i entered the room where my wife usually relaxes during noon and wiithout saying anything just pounced on her, she had her back towards me and thus she did scream initially but after realising it was me she stopped. Slowly I undressed her and without hesitation asked her to get into the doggy style and immediately inserted my dick! The thumping went on for an hour till I had a wild orgasm. And presto when she turned I saw that she was my wife's sister and not my wife! I was so aghast seeing this that I just could not figure out what I should do, but she gladly accepted this. The secret is still unkown to my wife. But this day I can never forget in my life.