A young man gets married. After the first night, his friend asked him,

'Hey, how was the night? Somehow you look slightly worried.'

Replied the young man 'Oh, everything went fine and I had a very nice time. But at the end, out of habit I gave her 100 dollars!'

'Forget it man, anyway she is your wife and money will be with you only', consoled the friend.

'Yeah, that is true. But what worried me is the fact that she immediately returned 20 dollars!'