How can I show my affection for her?

The best ways to let a girl you know you love her are to pay attention to the little things. For example if she tells you her favorite song, burn her the CD. If she says her favorite flower is a sunflower make a mental note and show up with them for no reason. This shows girls that you listen to what they say and you take the time to do things for her you will know she likes. even leaving little love notes in her purse telling her to have a good day. Its the small thoughtful gestures that make girls melt. Alos, tell her you love her. Just make sure the first time you say you are both dressed. LOL!

Tell her you love her and MEAN IT!! make sure she knows it!!

Make her feel important like she is the only thing in the world that matters to you. Bring her small gifts like flowers or candy or somthing. If you love her, let her know it.

Dude, Rosenrot, I don't think there's anything else to add... you said it all!

Alright bro, here's the deal. The girl who answerd this before me is absolutely right. However you can put a little more effort into it so she knows that she is indeed special. Every boyfriend gets there girlfiend flowers and chocolates etc. If you realy love her then you must do something out of the ordanary for her. Something that shows how much you love her. (I am a guy so correct me if I'm wrong girls) but girls want to know that in your eyes they are unlike any other girl. I've had the name Rosenrot for a long time and it is german for Red Roses. (It's also a rammstein song about a love story involving a red rose). I got the name because every girl I have ever dated I have given a red rose. It was my claim to fame you could say. Well my current girlfiend who I am very much in love with knows why I have that name. I wanted to show her that she means more to me than any other girl on the planet. So instead of red roses, I took her for a walk through the park on a full moon when the stars were shining and as we laid there with her head on my chest, I pulled out a white rose and gave it to her. She knew what it meant because I have never given anyone a white rose. White doesn't have to mean friendship. Think about it. White is clean, pure, and untainted. Which is why she got a white one as opposed to any other color.

So to answer your question, do something special. Go out of your way to plan an extremely special night for her that makes her KNOW she is loved. Not just something standard. I hope this helps you and sparks your imagination to think of somehtiing and be creative. And for all the girls that said there's no such thing as a gentlemen anymore, I'm sorry but you are very mistaken. I am only 17 and I'm well aware that I haven't been at the whole love thing for very long but I can assure you I do know what I am talking about.