They are not really asking for some romantic essay proving that you believe in love and marriage - they want hard proof that this is a genuine marriage. You should also include information on how you have established your marriage after the ceremony - how you have bought a house together for example, that you live together, perhaps that you are trying for a baby etc. Your statements are a bit confusing - did you meet for the first time at your cousin's marriage or when you went to the movies?
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