Falling in love with my foster brother.. what to do?

Anonymous
So I have been l have been living with a girl friend of mine for two years now since my parents sort if kicked me out. I share the top floor with her older brother who is 21 years old (I am 18).

He is truly the sweetest and most down to earth guy I know and I know he would never do any harm (I've been through a tough time). I am afraid that I am falling in love with him the more I get to know him and see him every day. I havd tried to forget him by going out to clubs and hooking up with other guys, but that doesn't work.

What should I do? Obviously I can't flirt or try to date him because that would have to big of an impact on my living situation. Please help me, thanks!
Falling in love with my foster brother.. what to do?
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