What if I made known that I'm not going to attend the tuition lectures my parents pay for?
Oh wow, is this the honest to goodness truth? Why are you not going to attend the lectures?
It's my personal matter. Anyway, I now have a smoking hot Portuguese girlfriend at home
Even when you got things to do, it is not right not to go to the lectures. Your parents paid a lot of money for them and for you not to go is a waste of money. They will think twice about helping you in the future.
It's okay. I can still learn other ways.
But your parent's hard earned cash went into this for a long time, it would be rude not to use the things your parents wanted for you. I think they might even disown you. Don't you care about anything but your girlfriend now?