Based on personal experience, I have never changed my mind about someone after knowing them for two or three years. I barely change my mind after the first hour. My attitude is fish or cut bait. Most happily married men I have known have been crazy about their wives from early in the relationship. If you don’t feel that way, that’s a concern. You should always be striving to find the person who will help you to have a great life (and vice versa). Don’t waste your time – as the old saying goes – it’s later than you think.