you let them get to know him and take your time,
Ask your boyfriend to come visit your house and show your parents how good and responsible enough to take care of you.
Or, do the opposite.
Show your parents how you can be responsible enough to have a boyfriend,
parents usually are afraid you might eventually be getting to close with your boyfriend that then you end up by being obsessed with him.
You cant. if your a minor its unsafe (and i believe also illegal) to do this. you could have one or both of them go with you to visit him.
Well, if you know that she has a boyfriend that's great. But never let your parents know. Let your sister tell them. Talk with your sister and convince her to tell your parents.
Prove to them that you're mature enough for a relationship.
well you ask them then you have them meet your boyfriend but make sure your boyfriendd acts how your parents would want your boyfriend to be like
You can tell them how responsible that you are going to be and it can be embarrassing if they come too.
tell her how responsible you are
Honestly, you can't convince them. Either they will let you or they won't.
if your parents wont let you get sponsored, well, id yell at em.
you say parents are going with
To let your boyfrien come to you, I will convince him to be with you. Example, giving him a nice background about you.
If the girl in question likes you then you won't need to convince her to let you be her boyfriend, you must wait for the signs to see if you think she is interested, let the girl make the move, don't be pushy, be patient.
you ask them