Why Do Roses* Symbolize Love*?

I have been thinking about this since time now..
After all, why do roses Symbolize Love? We here it in movies, "give her flowers" Why? Why is it so speical to give roses/flowers to somebody?
A red rose shows love for somebody, the colour red itself is a way of showing love. But hey ain't red the colour of anger? So how can you be sure when somebody gives you a RED rose..it doesnt mean anger, and always has to mean love?πWhy isit always the red rose which is focused on...
LOL! i ask too many questions na..i dunt no, they just bobble up in my head.π³