No it is not, it should be : Marie has stolen my heart. Hope this helps! : )
Its to prove facts as some learn better by association, some are more open to listening to facts. generally it just depends on the persons morals.
He uses quatrains. The rhyme scheme of the quatrains is abab cdcd efef.
The structure of his sonnet is that there are fourteen lines and the first twelve lines are divided into three quatrains with four lines each. In each quatrains, the poet develops a problem and resolves it in the final two lines which is called "couplet".