Whilst hormones are undoubtedly responsible for many of natures functions, including sex drive, eating habits, blood sugar control etc., I don't think that 'hormones control how much a girl wants to go to bed with you'. It's a WHOLE lot more complicated than that, not only in the body but also in the mind. Social standards, manners, responses, good old fashioned looks etc all contribute.
Injecting a girl with testosterone when your an ugle, four eyed, limp wristed, foul mouthed LFS, errr, rFactor player won't make her (or indeed him depending on your angle of inclination) want to jump into bed and practice baby making.
If any of us want to be 'better' at attracting 'mates' then just saying 'it's to do with whore moans innit' won't get you far. At the very least smile, avoid staring at bean bags longingly, and always always always hold doors open for women. And women, always always always acknowledge the thought taken to hold a door open (or whatever), as manners and gentlemen are a dying breed (no pun intended, honest) and need every encouragment.
Also, try your hardest to never swear near a female. If you know foul mouthed women then it's probably best to avoid them as partners.
Finding women to be with isn't easy. Some manage well, others manage less well. But out there will be someone as freaky and weird as you, who wants to meat someone like you. You can't 'plan' to get a girlfriend, but you can maximise the odds in your favour by being gentlemanly and polite (and funny if you can, but humour is also a dying art).