I like my new boyfriend's, ex-best friend more than him...?

I've liked this guy from afar for about a year and after his gf broke with him, he turned my way and started to date me. I was thrilled of course after having a crush for so long. He is good, but being with him is not as wonderful I had made him up in my head to be. We lack a bit of pion and are more buddy like than im used to in a relationship. Nothing bad at all, just not as pionate and intense as I hoped. I thought not to rush things and give it time, maybe we will be closer in the future. It has only been a month so we are still getting to know each other, but have established we are going out. About 2 weeks into going out with my bf an old friend of his came back into the picture. They had a falling out and the friend was ready to talk and try to make peace with him and his friends. During this time I got to know this guy and we became very close, but we were both respectful of the relationship I have with my bf. My boyfriend was having drama with his exes and had issues at home that kept us away from each other for a bit. But me and this guy continued to talk and are so much more connected than I am with my boyfriend. There is much more chemistry there. I know this guy likes me too, frankly he is head over heels for me. I like them both for different reasons, but my boyfriend hasnt been around enough to make that connection that the other guy did. I think its unfair of me to dump my bf for reasons out of his control. I did want to be with him for a long time and was willing to be patient with him until this guy showed up. Now im torn and going crazy over it. Any advice?