It sounds like there are no signs.
she flitrts with you while they go out
the song is about that she wants him as her boyfriend
when he has sex with you reallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreallyreally hard
Start by asking him.
It means the girl doesn't belief her boyfriend. Because she think that when she allow her boyfriend to go out,he will go in for another girlfriend.
If your ex-girlfriend wants you back even though she has a new boyfriend, some signs to watch out for include frequent communication or reaching out to you, expressing nostalgia or reminiscing about your past relationship, showing signs of jealousy or possessiveness, and discussing topics related to your future together. However, it's important to have open and honest communication to determine her intentions and consider the feelings of everyone involved.
He'll tell you.
you cant. unless you start changing to the boyfriend she wants
It means he likes you and he wants you.
If mean she/he wants you as a girlfriend/boyfriend
When a boyfriend gives money to a girlfriend it is called a gift. If he wants the money returned it is a loan.
It means that he wants you as his girlfriend (or boyfriend). It could also mean that he wants to have sex with you.