[FONT=""][COLOR=""][SIZE=""][FONT=""][COLOR=""][SIZE=""]Hi I'm Lisa and I'm 16.

My sister is 23 and her boyfriend often stays over. He's 26.

For several weeks now after my sister leaves for work her boyfriend has been coming into my room and making me give him oral sex. I can't stop him so I just give him what he wants.

My problem is as I don't try to stop him now and have gone with it he's actually started staying over more often now.

What should I do?

Lisa.[/size][/color][/font][/size][/color][/font]