I'm a garbage tier human and boyfriend.
I'm saddened to hear you say that. But why do you think you're a bad boyfriend?
I steal my girlfriend's credit card to watch pay per view movies.
Stealing a credit card from your partner is extremely wrong and you shouldn't do it. Your partner would be furious that you are spending their money without their permission.
I want to provide for her.
You're not providing for her if you are stealing her credit card, and in fact you're doing the opposite as you're damaging her funds and she may have really needed the money that you have used to pay for the movies that you have watched. I suggest that if you really care for her, then you will get a job and try to provide for the both of you.