repeating this here

"Love between people, isn't just about attraction or a bunch of hormonal reactions, it's more than just that. Love between friends and that special someone, is a commitment. It is a commitment to actively love someone above all else. If love is based upon "chemistry" and "feelings" then it is love that cannot last, but if it is a promise to love someone with all your heart, to love them through all circumstances, it will be tough, that I can guarantee, but it will be the most rewarding and lasting form of love, one that conquers and commits. 

Physical purity is just one aspect of purity, there is too, the emotional aspect of it. Not giving your heart to people who don't deserve it, because when you do and when they break it, part of you "dies" away. At the end of the day, when you marry that one person, when you find that one special person you want to live with for the rest of your life, all that is left is a heart that has been broken and patched and full of cracks. You can't Love wholeheartedly when you don't have a heart that is whole."