I have been dating a guy for a month now. We are taking it slow but I am starting to develop feelings for him?

and I am scared. I feel really guarded because I got out of a long relationship last summer and I was really hurt by it. I am ready to move on but so scared. I know that in all fairness to anyone I date I need to let myself go but this is all so new to me. I have been on dates but this is the first man that has made me feel alive again. He is a friend of my brothers so that makes the connection a little stronger but when we are togther he is always asking me what I am thinking. I mean I am thinking oh my God, you are amazing, you make me feel alive, you take my breath away...but how do I say this without spilling all my thoughts!?!?!? It's bliss, not love. not even lust it's an honest beginning of something great I just need some advice on how to be honest but not scare him. HELP!!!