Is it wrong of me to ask?

Recently in a new relationship, going on 3 months and my bf is always trying to do something. Now he just got his X Ray license, I’m not sure how much they make but I’m more of a “save your money” until you have your own place and stable not living with family members. He says he wants a future with me and he’s trying to move out of his moms house by next year but he’s constantly spending my question is..

Is it wrong of me to ask him he’s good with saving money? Does he really make that much to be spending?

Every weekend he’s trying to go to Vegas or out with friends and I always tell him let’s try to save. He always says “I have the money to spend”

What do you ladies think?

I just want to make sure he’s responsible