Take a clothes pin and paint the ends like an envelope. Write the words on the other end. Open clothes pin and glue a paper with the words I love you to both ends.
Glückwunsch zur Hochzeit - http://1pic4u.com/2015/08/23/glueckwunsch-zur-hochzeit-88/
Referencia Ambientacao Cenario
I wouldn't use the doilies I have crocheted, but I would use purchased ones to do this.
Heart shaped tea packets... super cute for a gift.