Free Falling

Just a little background, my wife had a stroke that went undiagnosed for over 72 hours as she slipped into a nonresponsive pseudo-coma. She had locked in syndrome, reducing a once vibrant, talking at 200MPH woman to a barely there body that only had control over blinking and looking up and down. I could only imagine that was the closest thing to hell on Earth. Locked inside your own mind unable to respond or reach out for help. After 7 months, we decided to let her go. It was difficult for me and my 3 kids, but over time we started to heal. Now we have surpassed 2 years from the day she passed. I have started dating one of my wife and my friends for the past 3 months and have fallen in love. I am so confused now about how I am supposed to feel, because I don't feel anything. I wish that she was still alive, but I am not as lost without her as I was for the first 21 months after she passed... I just don't miss her like I am expected to miss her. I just don't know... I am happy with my new love and she is respectful with the kids... am I a bad person for being ok and moving on?