So, I used to play this card game called yugioh and hang out with boys from the after school care I go to whom also play it. But ever since the new season came out I stopped because I had exams and decided it was a waste of money. But then a few months ago one of the younger boys invited me to his birthday party, which I couldn't refuse. I wanted to buy a deck for him, but the night before the birthday party I couldn't hold back my desire and took the deck for myself, only giving him a few cards. I feel guilty that I ruined his birthday just because I couldn't control myself. Taking a deck of cards sounds minor but I'm still overwhelmed by the guilt today.

Sorry I answer later -w- I do not know if I'll be helpful. It is normal to make errors '^' it is useless to regret, you can not change anything from the past and you must accept it ^u^ And this error that the proof than you are human .u.
Sorry for my english I'm french o3o

It's good to feel guilty. Giving him the cards anyway might make you feel better.

Uh ? Why didn't you buy another deck for you ?

Now just bring him 1 and explain the situation.