Choosing to not date doesn't ensure that you can give your future husband a perfectly intact, non-bruised heart. (See: Hello Mr Wrong). Face it, we live in a world where sensuality is prevalent and encouraged. Where you supposedly learn by giving your heart to person after person only to have it held, loved, and then returned to you broken, bruised and worse for wear. If attraction is encouraged and cultivated what happens when you get married?? The attraction doesn't just automatically turn off or transfer to only your husband. It's still there.
So, how do you protect your heart? Some time ago a thought popped into my head and it's been a big help to me. The thought was to practice being faithful to my husband even before I know who he is. I am destined for one man, saving myself, keeping my heart for him. But, allowing myself to be attracted to other men is not being faithful. It's running around on him. Behave as a married woman. Practice faithfulness now! So that when God blesses you with, as Peter Marshall said, "The highest halls of human happiness". It won't be hard to protect your heart from outside attraction and you will be able to give your husband a fuller, less bruised or unbruised complete heart. A heart that belongs to him, that is beating out a tune for him and him alone. Just think about it. "The heart of her husband doth safely trust in her, so that he shall have no need of spoil."