If you found and were with the love of your life, would you do anything to keep it?

One thing you must remember is that love is not something YOU have and YOU decide YOU can keep at any cost. It is an emotion that both people have to feel. You can't just decide that you will force that emotion out of someone else. That could have the opposite effect. Instead, your loved one must be so well known to you that you know exactly what they want and need, and you fulfill it before they even feel it is lacking. A look, a touch, your time...