Roses are Red, Violets are Blue

"Roses are red violets are blue" meaning?

"Roses are red violets are blue..." What does it mean? When to use it? I've seen/heard it a lot but I still don't know the exact meaning of it. Can any one explain it please?

Public Comments

1. This is the way many simple little poems start. For example, "Roses are red, violets are blue, I'm a good person and so are you."
2. Roses, represent roses, which are often red. And violets represent violets, which are blue.
3. This is how many poems start, especially drifting towards how simple love poems start, such as "Roses are red, Violets are blue, there is no one I know, who's as pretty as you." see?
4. This is a common phrase usually written in the beginning of short romantic poems. Example ; Roses are are red, violets are blue, The only person i want is you :)