Dont judge me for falling out of love

I dated this man for 10 years and we had our struggles and he cheated and I cheated and then he got in an accident and we grew closer then the cycle began again because he was insecure about his battle scars. However, we always remained each other's confidant. Like best friends easy to forgive one another. Thus, as time progressed we both changed, stopped the games, graduated from college, began careers, and settled down together. We had been monogamous for 3 years. I'm invested in my career and ready to evolve. He is ready to move forward. He s ready to take on other people's problems (family) as his own and I'm ready to move forward. I felt like our time is up. He was leery about marriage and I'm like, we been to hell and water together. Deaths, homelessness, infidelity...we overcame a lot and you still cannot fully commit. I spent my entire 20s with this man. Enough is enough. I still care about what happens to him and it's hard to let go completely even though my heart is already with someone's else. My new guy is ready for me to move and I don't know what to do...