Is it love, or is it a rebound?

I'm just out of a 7 years relationship. It had been 2 years of me wanting to leave him, but staying for the kids. Then wanting to leave, but getting accidently pregnant, so staying. There was no more love. And the I met the Other One. It hit me. I was in love. He's an awesome man, an awesome person in general : generous, kind, loving. We are taking it very slow, volontarly, knowing I'm just out of a serious relationship an all. Things are going pretty well, even though I sometimes find myself craving for more (we don't say ''i love you'', but we do spend a lot of time together, not only being intimate but hanging out) ... We do behave like an old couple, though.

Lately, Ive been noticing more an more little things that might bother me in a long time relationship. I have a hard time telling if i'd get used to it or just annoyed. I try to tell myself that only time will tell. I'm still very much attracted to him and we get along great, we understand each other by a glance. He treats me like a princess and I know that men like that are rare and I might never find another one like him (just ask any of my girlfriends, they're all jealous). But I'm still afraid it might be a rebound... Is there any way to be sure it's Love and not just a Rebound?