Don't send passive aggressive texts if she takes a long time to respond. Don't say things like "If you don't want to talk to me, just say it".
Never let her know that you're jealous. That's a turn-off for most girls.
Girls like guys that are capable of being bad to others, but are nice to them. (It makes it even more sweet).
Don't give her the impression that you're trying to show her how much better you are than everyone else. Just be yourself - show that you're smart, fun, and outgoing in a natural way!
You should ask your partner if they enjoy dominant-submissive role-plays, and which role they prefer. The minion to Gru relationship can be used for submissive-dominant roleplaying. Remember to use a safety word!