I loved him so much and he's just not that same person anymore.
A note of caution - I have no doubt he was wonderful to start with, and was/is still periodically wonderful. They all are, otherwise no one would fall for them. Slowly the rot creeps in - some will say they were never that nice person and it was all an act, some will say they are both the nice and the nasty person. Either way, it's all a bit Jekyll & Hyde.
Here's the point: abused partners never go back to Hyde - they go back to the nice Dr Jekyll. Because that's the person they fell for and the person they formed the relationship with, they think that this is the "real" side of the man, and that Hyde just reared his ugly head because of stress, or jealousy, or a bad childhood, or something, anything. So they go back to the "real" man, thinking that if they just get the combination right again it'll be ok; if they can just get that magical formula like they must have managed in those wonderful early days, then everything will be ok again.
That's what most women go back to - they don't go back to an abuser, they go back thinking and believing that this time the real him might be back to stay.
You don't need me to say this, you know the punchline. You've seen the real him, and it's the him you'd see much more of if you hadn't left. In the days that come, if you find yourself feeling sad or guilty, or if he comes at you with promises to change, just remember that. Well done on getting out and keeping you and your babies safe.