Some more Questions about Marriage.

Marriage...
When does marriage become a role? Do people honestly fall in love with the same one person for the rest of their lives? Is it a possibility that people will only LOVE that one person? I find it hard to believe that not almost every single marriage is plagued with deception and cheating. Is marriage there for when you finally find that one person you want to be with for the rest of your life, or is marriage there for when you get old enough and lonely enough that you find someone that you can stand being around all the time, accept for their ups and downs, and work well together? I mean, marriage isn't just a love, it's a partnership. Back when there were arranged marriages there was a lower percentage of divorces, not only because it was frowned about and hard to get re married if you had been divorced but because relationships that are meant to work out as a benifit to make more money or keep property under the same name, they learned to love the person they were with...I don't know.
I guess the real question is, is marriage real? I true, honest, loving, and never strayed from relationship.

Long term relationships...they always get to me at some point and I start thinking, is this really for me? Is this what I want?...I've got so much to talk about but I don't have the right person to talk about it with.