Hello, TooManyDays, and welcome to Psych Central! I can't say I've had your experience, but I can understand how that would happen. Even in a good matched marriage, people do change. The main thing is whether your partner is willing to accept your changes and grow with you.

I do believe passionate love exists. I encourage you not to give up on your marriage. See if she would go to counseling with you. Maybe phrase it like "I want our marriage to be the best it can because I love you." If she won't go, then go by yourself. You might just find that your woman is a great fit for you. She is a known entity, so to speak. If you leave, then you might not find someone. Who knows?

Congrats on working to improve yourself and your great strides in feeling good about yourself.

Again, welcome!