if you are hard up for cash, and getting roses, buy the baby roses. they are almost as big, and less than 1/2 the price. the grower dies them any colour you want, you can even get multicoloured ones. if her favourite colour is blue youre in luck those ones look fantastic.
also maybe make a cd of her and your favourite slow songs. maaybe take the day off make sure she has the day off. cook for her, POUR HER A HOT BATH WITH ABOUT 4 OR 5 OF THE CHEAP SMELLY CANDLES, sorry about caps lock im at work, give her a body massage including foot massage, and make it a sex-all-day-day (play the cd you made tell her the songs make you think of her) jam her real good and she will brag to all her friends.
then break up with her and all her friends will want you.