"Work on the "assumption" the girl is ALWAYS right"

That is half the equation

The other half is "A lady may always be right, but she may not be right for you"

Be aware of just how much money you are spending, and if she is just taking you for granted, then you guys are just friends, and you stop paying

After all... with all your other friends... do you pay all the bills for meals, movies, entertainment etc ??

The answer is no