Treat them bad.

You girls respond very well to guys acting like assholes, until they get tired of it in their later years when they are looking for a provider.
They aren't immune to assholes like the older girls who have seen and fucked it all.
If she is acting aggressive, say 'do you have an off button?' or, 'do you normally act like this?'

Do not go on classic dates.

Bring her to a bar, McDonalds, etc. When she asks you what you did on the nights you didn't hang
with her, mention nice places you went to with 'a friend.' You need to make her think she is being
hidden from these spots because you are embarrassed of her.

Never bring up serious relationships before her.

When she wants to take things to the next level, neg her by saying; 'are you kidding?'
She has to struggle and not pin you down.

Do not underestimate them.

For example, if she takes 3 hours to reply to a text message, it's not something big. It could
be to test you. Take a full day to reply back.

Make her think you only want sex from her.

Find and excuse why you cannot hang with her after you found out she is on her period. Do this
when you're in a new relationship. She'll do more for you in bed to keep you interested.

Do not prove your status to a younger girl.

Young girls do not care about your status since they only care about feelings and emotions.
This is why you will see a young girl hanging/fucking with guys like Steve Urkel.
They do not care if you drive a BMW or live with your parents.

To sum it up; act like an asshole and enjoy banging her tight pussy that will be loose in 3 years.