Do I have to let my friend use my stuff even though I used to use hers all the time?
What is she wanting to use of yours?
She wants to use my things like the TV or game console.
I don't think that is quite fair of you. You should return favors especially if she didn't mind letting you borrow her things. It is only fair that you do the same if she was so nice to you.
No, I don't like helping others. We never made any deal.
Don't you think that you should share your things with her since you have used her things in the past? She will probably never share with you again if you don't return the favor.