how do you tell someone you might not love them anymore?

itisallaboutme

I have been having nagging doubts about my relationship. I am just so confused at the moment. I really think I want to break up with him, or at least take a break. I have never been any good at understanding my emotions, and I am afraid that all this anxiety and doubt centering on him and our relationship could be misdirected from other problems in my life.
The thing is when I am with him I do not feel this way, I also think I regress into very childlike behaviour. I get clingy and want all of his attention on me all the time and make childish demands. Which is not healthy. This has never been typical of me in a relationship. But when we are apart I don't miss him, however I think about him ALL the time. I also tend to think we are not right for each other, but immediately after this is a thought of what if I don't really feel that way and I am using that as an excuse to rationalise breaking it off with him.
I used to think I was in love with him, and now I am not so sure. Again when I am with him, I tend to lean towards the "how did I ever think I didn't love him camp?", but surely this doubt in itself is not a good sign.
I also recognise the difference between loving someone and being in love with someone.
He "says" he loves me but most of the time I do not feel like he does, despite him telling me. I think one of the reasons being, that while I realize everyone has different feelings emotions etc... in this case I cannot help it when I think I feel this way so this is how he must be feeling too. So while he might really love me, I cannot be certain that he does or feel like he does, because I am not certain that I do him anymore.
What if he is completely happy with our relationship, and thinks nothing is wrong, and these feelings are not correct and I am just misdirecting them?
I do not want to hurt him, so my question is should I talk to him about it and how much do you think is OK to divulge. how do you tell someone "I am not sure I love you, I want to take a break or possibly break up"? I also do not want to push him away, I am aware that telling him any f this may cause him to block off his feelings for me in case of getting hurt, and I do want him to love me, despite my uncertainties. I realize that this is selfish.

Beruthiel

OP
As you already have the same thread in the RI forum, I'm closing this one.