Boyfriend is confused and I'm worried

Aiden

So my boyfriend and I are about to hit the 6 month mark. We celebrated his 33rd birthday 2 weeks ago but haven't seen each since then. He told me that he's confused about his feelings towards me. He's not sure if he's just getting used to us transitioning out of the "honeymoon" phase or if it's his feelings fading. He says he doesn't want to break up with me but he just needs time to think about what he wants and our future. We still talk everyday and he makes it clear that he isn't doing this to hurt me but he just needs to be certain about us. I'm only his second serious relationship and he's my first, I'm 25.

How worried should I be?

I'm giving him time but is this a normal thing?