祝福十几年朋友结婚的英语祝福语可以如下：
Wishing you a lifetime of love and happiness. Congratulations on your wedding!
It's a joy to watch you as you start a new chapter of your lives together. May you have a wonderful journey filled with love and happiness. Congratulations on your wedding!
Your love story is truly touching, and I'm so happy to be a part of it. May your wedding be filled with love, laughter, and beautiful memories. Congratulations!
Your wedding day is one of the most important days of your life. I wish you all the happiness in the world as you start this new chapter together. Congratulations!
May your love overflow with passion and depth, and may your relationship never lose its magic. Wishing you both a lifetime of happiness and love. Congratulations on your wedding!
以上都是一些比较通用的祝福语，你可以根据朋友的具体情况和你们之间的关系，选择适合的祝福语来表达你的祝福和祝福。
May you in love river forever
