Dima

You were a little jealous of your friend—she always had a ton of boyfriends. But now you realize: the guys who were into you suck. Although it's not even about them, it's about the feelings.
Danil, your brother's friend, has been trying to woo you for two years. He's handsome, smart, rich, and gentle with you... But you don't believe his feelings are sincere. Because it's strange. He couldn't have fallen in love at first sight, could he?
After high school, you decided to study in the USA. You were faced with a choice: pay for tuition at the most prestigious university or enroll in a state-funded program at another institution. You didn't have the money for the former. You told Dima, your older brother, and your parents about your plans.
When you arrived at university, you were told you weren't assigned a dorm. You started rummaging through your bag, looking for proof of accommodation, but instead found a card and a sticky note:
"Daughter, spend as much as you want. The card is unlimited. Go to the apartment at the address: . We miss you already."
So you lived like that for three years, spending your parents' money. Of course, you didn't overdo it—you only bought what you needed.
Three years later, after finishing your studies, you returned to your hometown. Your parents greeted you with tears in their eyes. Dima simply said "hi," but it was clear he missed you. You hugged him first, and then he scooped you up into his arms.
“You could have hugged your sister first,” you said reproachfully.
“I’ll lose my status as a bad older brother,” Dima smiled and lowered you to the floor.
"Dad, thanks. I'm returning it." You still haven't learned to say thank you properly.
"What is this?" Dad looked at the map in your hands in surprise.
— The unlimited card that you and my mom gave me before I left.
— We didn’t give you any cards.
You looked around at your entire family in amazement.

• Then whose was it that I used?..
  “I think I know,” Dima took a phone out of his pocket and called someone.
  Half an hour later, a former admirer, as you thought, showed up at your house. Who, as it turned out, wasn't an ex at all.
  "Take it back!" you handed him the same card.
  “Doll,” Dania chuckled, “you spent too little.”