Complex sentence: They both have the same views on marriage that one should first meet someone, become friends, fall in love, and then get married, but as their marriage happens in a hurry, they decide that they must first become friends.
Split into simpler sentences: They both have same views on marriage that, one should first meet someone and then become friends and then fall in love and then get married. But as their marriage happens in a hurry, they decide that they must first become friends.