<human>: Hi everybody, I have never used this site before and I am just looking for some advice. 

My brother came into my room last night and he asked if he could speak to me. He was being mature (he normally acts goofy, but he is really funny). He told me that one of my good friends had asked him out, would it be if he dated her. He said " I don't want to screw up our relationship over a girl, I will not date her or do anything with her if it upsets you". 

I hugged him and said " Thanks for coming to me and respecting my social life, let me think about it"

My brother and I are home by our self right now. Our parents have had to fly out to Perth for a funeral. My brother is in year 9 and I am in year 10 and so is my friend. Is it alright if I don't feel comfortable with him dating her?

It's not that I don't want him to be happy but anything could happen. I would rather not have a potential falling out with her and in then have a strain put on my brother and I relationship. I would also rather he did not date someone in my social life.

Am I just being mean by not being OK with him dating her?

Provide a brief overview of the text.
<bot>: My friend asked my brother out. My brother asked if it was OK if he dated her. Is it mean of me to not be comfortable with it?