I think I am going to use my baby's father's card in order to get them a stroller.
Wow! Why would you use another persons credit card?
He still owes me some money so I think this will teach him to pay me back.
It doesn't matter if they owe you money, using another person's card without permission is a crime. They can press charges against you when they find out.
It's okay, He's fine with it
This just seems more like stealing over anything else. Even if he owes you money, you are using his property without asking him. Just be careful not to get yourself into trouble with this one!