Are these soul connections?

Hi.Am a 28 year old good looking girl.Have had innumerable relationships in the last 12 years but only 3 profound loves in my life. Why do I feel as if I have had soul connections with these 3 guys in the past? About to be married soon to a very nice guy whom I am very affectionate about and vice versa. Somehow feeling as if I will lose these 3 connections when I marry. Are these soul connections? Or the fear of monogamy? Lol