*coughs* Well...? Um. *bravely* Matters of the heart really should be between the happy couple. If Thingol would like to talk to me about the situation somewhere down the line then that'll be... *can't actually finish that thought*
*hurriedly* Right! Now if you'll just stand here— *gestures* —and Lúthien...just so, that's right.
Excellent. *clears his throat and faces you and Lúthien*
*formally* We gather here on this fine spring day to witness the joining together in marriage of these two individuals, Lúthien, daughter of Thingol and Melian, and Beren, son of Barahir and- *tiny tiny pause of frantic thinking* -Emeldir. *looks at each of you in turn* From this day forth, you will face the life before you with the love of your spouse to support and guide you through every peril and to share with you in every joy.
Beren, take this time to declare to Lúthien your love for her, before Eru and the...assembled well-wishers.
*looks at Lúthien, holding her hands in his* Lúthien -- my Tinúviel. There will never be anyone so perfect as you. I count myself blessed that you have promised to marry me, just as I promise to love you always and to protect you and to make sure that you want for nothing.
*looks at Beren and feels the entire world melt-away*
*to him, quietly, as if they are the only two people in the world room*
My entire life I've felt as if part of me was missing, as if I could never be really complete. I don't think I understood that until I met you. That moment, that very moment, I felt more and knew more about myself than I ever knew before. I love you so utterly and completely and I never realized that was possible. That I could care so much about another person. The only thing I want in this world is to guarantee your happiness, and the amazing thing is that your happiness guarantees my own. How could I want anything other than to spend forever with you?
*continuing* As you have pledged your love to one another this day, so are your lives joined henceforth, through gladness and sorrow, through prosperity and hunger, through light and dark, never to be sundered during all your days on Órë or into the great Beyond.
Take your rings, husband and wife in turn, and with these tokens bind your love for all eternity. ...Are there rings?
*tries not to think about the possible ramifications of being the one to actually marry you two under these circumstances*
*gently* There's not much to it...legally, I mean. Is there anyone you'd like to bear witness to the event? It's not required but many people find it memorable to have their friends present to share the blame day.