I'm going to put PS5000 into my girlfriends bank account
Why are you putting money in her account?
She's in need for it and she's having trouble to pay the rent.
It is kind of you to help your girlfriend out when she needs help. It will help your relationship get stronger for her to know that you are supporting her.
Yes but now I feel I'm going to be in a lot of debt, I don't want to end up like a loser.
Don't worry about it, being generous won't hurt. If anything it comes back to you twofold, trust me on that. I have seen it happen, just be patient.