Just not feeling it?

So I have an opinion question.

My boyfriend and I, who is actually my best friend (was before our relationship and still is,) just broke up. His reason being he just “wasn’t feeling it” and thinks we’re better off as friends. He said in his eyes, we tried something and it just didn’t work out but he would still like to stay friends.

That’s fine. I agree in some circumstances we didn’t work out in some areas more than friends. However, I feel like I responded in a bad way at first. And I don’t really know what to take from his reason being “just not feeling it.” It sounds like I am the issue. Granted I know you can’t force things, but I just would like someone’s take on this I guess

There’s still part of me that hopes maybe he changes his mind but then again... can’t force it.