[ cheers and applause ] jimmy palma violets, this is their album, i want to thank selena gomez, i want to thank ben stein. Apologies to matt damon, we ran out of time. Nightline is next. Thanks for watching tonight on nightline, undercover bachelor, they say diamonds are a girls best friend. But they can also be a fiancees worst nightmare, were undercover going shopping for that rock of the ages. Are they telling you everything you need to know. Theyre on the prowl, for men young enough to be their sons, these socalled cougars are more than ever. Tonight we go inside where age is just a number. And a condescending store clerk in switzerland brushes off a customer who just happens to be oprah. Well tell you what she said about it on feed frenzy. Keep it right here, america,. From new york city, this is nightline with dan abrams. Good evening, thank you for joining us, many say that when you meet that special someone you just know. And some might even say the same applies when picking ou