Chat with girls that like to fuck
You can get one of these rings for about 0 and trust me you'll get a fuck worth far more than that out of it. On one hand you don't want to use condoms, so get her on the pill ASAP.
On the other hand if she runs the birth control she might blindside you with something annoying like a kid just to hook you. If she gets pregnant, take the new "morning-after" pill for guys.
Harlequin Romances isn't exactly going broke selling girls books about how a guy comes into the girl's life and does something as simple as fixing her car to make her life right and sweeps her off her feet.
You would be amazed at the "mileage" you can get just by taking her car down to the shop.
Also, after sex, just roll over and go to sleep, even if she hasn't had an orgasm yet.
However, if she doesn't at least give you a blowjob by date #2, #3 at the latest, there are better investments out there.