OK so here is more than you probably want to know.
Lines one and two are from the Song of Solomon Chapter 7 verses 10 and 11
The lines "Behold you are beautiful my beloved
You are beautiful, your eyes are doves." are also from the Song of Solomon, Chapter 1 Verse 15
The last lines refer to a part of the seven blessings that are said at a Jewish Wedding Ceremony. They come from the passage:
Talmut Ketubah 8
Blessed art though, O Lord, King of the Universe, who created mirth and joy, bridegroom and bride, gladness, jubilation, dancing, and delight, love and brotherhood, peace and fellowship. Quickly, O Lord our God, may the sound of mirth and joy be heard in the streets of Judah and Jerusalem, the voice of bridegroom and bride, jubilant voices of bridegrooms from their canopies and youths from the feasts of song. Blessed art though, O Lord, who makes the bridegroom rejoice with the bride
Here is the blessing (number 6)
Blessed art Thou, O lord our God, King of the Universe, who has created joy and gladness, bridegroom and bride, mirth and exultation, pleasure and delight, love, brotherhood, peace and fellowship. Soon may there be heard in the cities of Judah and in the streets of Jerusalem, the voice of joy and gladness, the voice of the bridegroom and the voice of the bride, the jubilant voice of the bridegrooms from the canopies, and of youths from their feasts of song.
There may be other attributions but this should give you an idea of where the passages come from.
Anyone else have ideas/translations?