My parents were married for almost 75 years, never had an argument, never cheated, loved each other till the end. Love is not just sex in fact, love is not sex. True love is understanding, faithfulness, trust, and devotion to each other. When you have been together for some time, and the newness has worn off, what love becomes is a sincere and unbreakable friendship not shared with others. If you fall in love over the internet, the sex is out and what you gain is trust and a deep friendship that is unbreakable, since you are sharing your most intimante thoughts with your other. Things that would otherwise never come up or be replaced with sex. I believe that writing and qq'ing let you share your serious thoughts and wishes with the other person as well as for them to do the same. I agree that being with that person is great, holding hands and kissing and sex, but that is physical and after a while it gets old, and you can get bored, when your bored, you start looking, that is the reason for so many divorces. A couple should get to know the other persons thoughts and hopes and wishes first, and writing lets you get to know them first, begin a friendship that will last a lifetime.
I don't know if I'm making any sence here, but in the end, my parents were as close as when they begin. If you asked my mother about somthing, she would say, ask my husband, if you ask my father somthing he would say the same thing. Nether one would do anything without the other's ok. That is what love is about.
I don't know if you understand what I am saying, but it comes down to love is a very deep and sincere friendship and trust between two people.