If you love someone you will care about everything about her. you will think about herevery sec of the day~ you will try to help or protect her everytime. you will think about her before you go to bed. you will send a gift to her before her birthday~ you will know all about her include her habit, favourite things, colors and whatevery she likes. haha i cant think of anymore~

you will know, becuse when you will find yourself doing things and accepting things that you always said you wouldnt do or accept. you will accept everything good and bad about that person, you will put them first in your heart and your mind, you will never imagine yourself without them, you will never think about to be with another person, you will strive to do your best for them ,you will be there when they need you in good times and bad, you will never go to sleep on an arguement. even if they are wrong, you will try to put things right, if they love you back they will do same. you will do anything for that person, without of course losing yourself, becuse you need to remain that individual that they fell in love with.

You want to be with her all the time and think you'd like to marry her one day.