I said I would kiss a female colleague for dinner before, and then I invited her for dinner. She said she wanted AA, and I said it was my treat. After dinner the next day, she had to give me money.

You know, you two are just colleagues. In that case, it's normal for girls to want to have a meal with you. It is precisely because two people are colleagues that the other party doesn't want to take advantage of you. Even if we are talking about inviting each other to dinner, the other party still wants to eat in the AA system. At least in this way, she won't feel that she has taken advantage of you or owed you a favor. But if you really don't want to take money from others, maybe you can call them and invite you to dinner.