Small things a guy can do to make his girl happy?

Compliment her, Its always great.

it depends on the girl, i think. as girls, we are suckers for the sweet and personal. instead of buying a big flower arrangment, buy either one or three roses and tie them together with just a plain ribbon. handwrite a card or letter and leave it with the roses where she will find it. instead of taking your girl out to dinner, spend some quality time in the kitchen making dinner with her. lay outside under the stars just gazing up at the moon and talking. leave her notes where she will find them telling her how beautiful she is and how special she is to you. do something that you both enjoy.

these are just my ideas, but i'm not sure if other girls will like them too.

Little things are the best things in life :)

When you say "hey" to her on IM, facebook put a smiley after it.

Ask her occasionally hows it going? or whats up?

Write on her facebook wall, and ask her if she wants to chill.

Take her for a walk, in like the evening, ask her where she wants to go.

Movies. The movies is special. I dont know why but us girls LOVE it.

Hug her when shes feeling down, or just hug her but not ALOT that she thinks your a creep. aha.

Laugh at her jokes.

Smile at her.

Talk to her! Give her advice!

Kiss her on the forhead, save the lips for something special.

Etc.

flowers, notes, romantic surprises, tell her she looks amazing all the time, tell her how you feel (if its good), bring her on a date and let her chose what to do the whole day, do things you know she secretly loves (me, i love going to the pet store or going to the lake) do anything you can think of that is sweet.

well all girls like to hear how beautiful you think they are and how much you care about them. that always puts us in a good mood(: