I think that much of life is about resisting the urge to act on instinct.
Things like jealousy, revenge, envy, greed and fear are very much a part of the human condition.
Attraction however.. well that's a great thing. As long as you're respectful and get to know these girls on a personal level, you really cant go wrong.
It's good that you respect your parents enough to do this. But personally, I suggest you go read Steve's latest article
how to be a man and really decide what it is you want for
YOURSELF.
You're smart enough to be on these forums, So you're obviously smart enough to do fine in school and have a girlfriend at the same time.
Cheers,
Dima