wonderings

was just wondering why there is this co relation between love and marraige... y does marraige have to be the ultimate culmination for any kind of love... i mean a person is supposed to be liberated in love and not consumed by it (no i don't believe in love that consumes) but marraige intrinsically is a kind of bond isn't it. Don't crucify me but just think it over....
Imagine a situation where both of you live your own lives together and are in love. The only impediment I can see is that your kids will not be brought up properly and so you need to get married and get under the same roof. Am not suggesting any alternative here because I don't have any but was just wondering aloud. Maybe you could give me one. Can you?