Your sister-in-law was amused to see how totally defeated you looked as the meaning of what she was telling you sank in. And she looked forward to telling you wife about how much this news was devastating you emotionally, even to the extent that you had trouble keeping yourself from sobbing -- because she knew how pleased your wife would be to hear about your emotional distress.
If only it had been that easy to convince my wife>..
He's playing their song.
You’ll be keeping your finger crossed that your wife will soon be pregnant. She told you when she first started cuckolding you that she would never let yo impregnate her – that she did not want your genes in any of her progeny. So she always has required you to use a condom. And then, two years ago, she stopped having sex with you, so when she does become pregnant, there will be no possibility at all that you are the biological father.
It took years for my wife to understand and feel comfortable with my cuckold fantasy. I think the fact that I never pressured her to actually fulfill my fantasy really helped. Instead, I always let her know it was her choice.