Many years ago, my sister rented a house with her then longterm boyfriend. She was 19, and they had been dating for 4 years. For some reason, she wanted to be the perfect hostess; she served nibbles every time people came over. Not normal nibbles, but handmade ones, with posh ham, rare fruit, etc. As soon as they had my niece (3 years into the relationship) she would constantly buy her small gifts, let her ride endless rides on the funfair (paying every ride), went to every themepark, zoo, etc.
When they broke up when niece was 3, my parents found out that she had taken out a loan for EUR 12,000 to support this lifestyle. We were shocked. There was no need for that loan. We visited them because we wanted to see them and catch up; water and bread would have been fine. She had a job as a food-distributor in a hospital (in charge of the ward kitchen), her former boyfriend had a job as a junior technician. He did not know about the loan, and would have been against it, but would not have been able to stand up against my sister. Worst bit: she got the loan with a tv-add company, paying some insane percentage of interest.
My parents took over the loan, paid it off, and had an arrangement with my sister to pay off every month. Every first of the month, my father would check his bank account to see if she had paid yet, because he had told her the loan would become fully payable as soon as she missed one term. He still had to call her every other month to make a speed deposit....
She now has a husband who makes more money than she can spend....