it means he wants to have kids
It means your boyfriend wants you to perform oral sex on him until he ejaculates in your mouth.
It seems that he has sort some of perverted mind and wants to see it happen in front of him. I'd recommend not letting your boyfriend do this to you, and ignore the brother.
It means that he wants you as his girlfriend (or boyfriend). It could also mean that he wants to have sex with you.
I think he means he wants to have sex.
he wants to be in russia
He wants to have it with you
he wants to do it
he wants to bang you
If mean she/he wants you as a girlfriend/boyfriend
It means she really has strong feelings for her boyfriend & wants to stay with him & no one else.
It most likely means is he wants you close to him, and he wants to have a close relationship to you.