Please...any advice?

Imagine waiting for the love of your soul for millions of years, and then, when you're with him, you realize that there are roles that humans must fulfill, such as reaching adulthood, getting married, and starting a family, but for you, you are their family, you are their own family, and it hurts to see your soulmate have to marry someone their parents approve of and accept, you stay silent so as not to make your husband feel bad, but your husband is already crying in your lap because he is afraid of fulfilling those roles and also afraid of not fulfilling them...Well that's what's happening to my Billy now. The reason? Luckily, I'm not getting married yet, but there's a good suitor my mother approves of, and his mother wants to meet me..So yeah...a formal relationship is coming, a relationship I formed 6 years ago and it's a strong bond, although not as strong as Bill's and mine one, but even so, it's not that I don't "love" that boy, it's just that my soul and heart already belong to someone, and that someone is Bill, I don't want my parents to suspect my relationship with Bill, they'll think I'm crazy, but... I also don't wanna be with anyone other than my Bill...