Where to go from here

So I've been friends with this guy for 4 years. He's really funny, attractive, smart, and caring. Throughout the past few months we've expressed that we both have feelings for each other but don't want to take anything too serious due to past experiences. I can tell that he has feelings for me, but it's like he's trying to distance himself now because he's holding something back. I really care for him and don't want to loose him or our friendship either. Can any ladies please drop some words of wisdom, share some advice, or at least give me some help if you've experienced anything similar?