After being hurt by past relationship(s), it can make someone reluctant about totally committing to a new one. We start actively searching for "reasons" to not commit, and start putting up walls.

Friends, interests, etc. are not going to be identical with any relationship...it would get pretty boring if they were. You are not in a relationship with any of these, you are in a relationship with him, just him. Seeing the bad side of you? We will always see the bad side of the other person in a relationship at times, and every person has a bad side of some sort to see. He'll see yours, you'll see his...and things will go on and still be good.

He sounds like a wonderful guy, and you seem very happy being with him. I wish you luck in working to take those barriers and walls down.