In catholic weddings there is usually read the first epistle of Paul to the Corinthians chapter 13 versicles 4-7, that was the one read by Menchu in Felipe and Letizia's wedding
I don't think that there is much difference between Catholic, Anglican, and Protestant weddings on this score. Chapter 13 of the first letter of Paul to the Corinthians seems to be a great favorite, regardless of denomination.
In Sweden (lutheran) we read Matthew 19:4-6 ... but only God knows how long (can only use it when man and woman are getting married...)
Then Song of Songs 8:6-7
Also used: John 15:9-12, 1 Kor 13:4-7, Gal 6:2, Ef 5:31-33 and Kol 3:12-14, not all of them of course, but some of them...
"Of making many books there is no end, and much study wearies the body" (Ecclesiastes 12:12)