Hi, I'll keep it short.

I live with my oneitis (I know I'm dumb) but I'll be moving out soon in a month.

Today, I let her use my hair dryer like many times before while I was out. When I came home I saw it in the floor of her room with a part broken, it still works tho. I had a shower and asked her to give it back so I can use it. She gives it to me "fixed". As soon as I move the part it falls off. I call her out on it, she acts as if "she doesn't know what I'm talking about" until I tell her I saw it on the floor broken. Then, she admits that she dropped it. She doesn't apologize.

I honestly don't know how to act. She has not enough respect to be upfront and apologize, I know her and she probably thinks it's fine/she's right.

How do I act? Do I not talk to her? Act as if nothing happen and let it go? I don't wanna seem butthurt but I know she doesn't respect me already anyways.

Ps. Another female friend invited me for drinks with some of her friends and told me to bring my flatmate along (as we are common friends) should I?

I know this is really basic shit but I always avoided confrontation and anger and I'm trying to learn how to deal with it like a man. Bear in mind I live with her.