I won't say I'm in love 🙊

So, long story short (because I doubt I could fit the long story in one post) I believe I met the love of my life recently. 
We started dating a week after we met, because things were just...right. He gives me butterflies and a sense of security all at the same time, and he's the only person I've ever experienced that with. He's almost everything I've ever asked for, and I feel like if my love life were a fairytale, this is it.
I swear time moves extra slow when he's not here, and I hate being apart from him. Watching the way he is with his nieces and nephews, I know that he's the type of man I want for my kids. I've already decided that THIS is the man I want to make it work with. Forever. I feel like I've known him forever or like he's a part of me that's been missing this whole time... I'm not head over heels in love with him, but I do actually love him and it scares me. It scares me because I've never felt like this and I kinda feel like if it's too good to be true than it must be.  It's only been a few weeks, but I don't want to sabotage it by being negative. I kinda want to tell him I love him, but I won't, not yet. Or should I? I feel like Meg from Hercules 🙈