Yellow roses aren't a romantic rose: In fact, they may suggest to your lover that you are attempting to end your relationship with him or her. Due to their association with friendship, yellow roses suggest "Let's be just friends." They are also associated with jealousy, another reason they may be a "break up rose." It would be unwise to purchase a yellow rose bouquet for your Valentine this year: Stick to the pink and the red in order to send the correct message, and save the yellow roses for your friends instead of for your sweetheart. The results could be disastrous if you send a break-up bouquet!