its too large to explain..
ok, open the Door and say hi to the boyfriend. later, ask first before to open the Door.
ask about her job.
about your opinion, be honest about her relationship with him.
dont be violently, hug her always, in the date.. talk in order, from UP to down responses.
at the end of the dinner, you see a guy... tell to him about she is your girlfriend.
and try kiss her.