"The second area, where you are called to express your love and grow in it, is your preparation for the future that awaits you. If you are engaged to be married, God has a project of love for your future as a couple and as a family. Therefore, it is essential that you discover it with the help of the Church, free from the common prejudice that says that Christianity with its commandments and prohibitions places obstacles to the joy of love and impedes you from fully enjoying the happiness that a man and woman seek in their reciprocal love. The love of a man and woman is at the origin of the human family and the couple formed by a man and a woman has its foundation in God’s original plan (cf Gen 2:18-25).
"Learning to love each other as a couple is a wonderful journey, yet it requires a demanding “apprenticeship”. The period of engagement, very necessary in order to form a couple, is a time of expectation and preparation that needs to be lived in purity of gesture and words. It allows you to mature in love, in concern and in attention for each other; it helps you to practise self-control and to develop your respect for each other. These are the characteristics of true love that does not place emphasis on seeking its own satisfaction or its own welfare. In your prayer together, ask the Lord to watch over and increase your love and to purify it of all selfishness.
"Do not hesitate to respond generously to the Lord’s call, for Christian matrimony is truly and wholly a vocation in the Church. Likewise, dear young men and women, be ready to say “yes” if God should call you to follow the path of ministerial priesthood or the consecrated life. Your example will be one of encouragement for many of your peers who are seeking true happiness."
--- Read his entire Message for the 22nd World Youth Day here.