To all of those who are having trouble with girls here, there are a few things you should know.
1) There is a girl for you out there, and unless you've lost your face in some freak accident, there is more than one. But you have to believe it, or you will never find one of these girls.
2) You need a healthy relation to yourself. Not just between your hand of choice and your junk, but love yourself, be happy about the person you are and have respect for yourself. If you don't care for yourself, then how can you expect others to?
3) Be yourself and don't settle for someone who isn't good enough. If you're just after a bit of fun, then this doesn't matter as much, but you don't want to start a relationship on something that isn't real. Don't change who you are for a girl and don't settle for a girl you're not happy with. If you're not happy in the relationship, then you deserve better.
4) Women can be really confusing, but in the end, what they want is a real man. A man who stands by them, supports them and makes them feel safe and happy. Don't be someone that can be manipulated, stand up for yourself.
5) "Good guys always finish last.". False! Women can be every bit as confused as they are confusing, and upon seeing a 'bad guy' who seems strong, independant and confident, they may mistake these attributes for the things I described in #4. But the truth is that these guys are most likely just jerks, and they won't make her happy. Don't let the 'bad boys' get you down.
Now, if you're still following and you're serious about a relationship there are a few other things to know.
1) Relationships can be really, really hard work. It requires effort from both of you, and you have to be willing to compromise. If you've found the right girl, it will all be worth it though, but don't go into a relationship thinking everything will be sunshine and flowers all the way through.
2) Make sure you still get your space. If you're living in a small apartment, being with the same person 24/7 is going to drive you both nuts, and there's nothing wrong with wanting some time away from eachother. That's normal, it doesn't mean you care any less for the other person then you think you do.
3) Don't rush into things. Take things at a pace you're comfortable with, and if it's moving too fast, then slow it down.
4) Communication is vital. If something is wrong in your relationship, you're mad at her or whatever, talk about it! If you let it slip and sit in the background, it's only going to get worse, and all of a sudden, all the small bad things you've let slip will have you so angry at eachother that you won't even know what happened.
Just ask if you want to know more, and I'll try to answer as best as I can. 
