I've been fucking my brother-in-law since before he married my sister. The fact that we are cheating seems to make us hotter fuckers. He sometimes says, "Shit, I feel so guilty fucking my wife's sister." I answer, "I know what you mean. Let's just fuck and put it out of our minds." He says, "You're right, let's just fuck." I'm dating some other guy and he hasn't a clue what a shit bird he's dating. I can't stop, though. Could you, if you had a great, hot, sneaky thing going on? I don't enjoy my boyfriend nearly as much as my brother-in-law, who makes me come in no time at all.