I think i should offer an apology.

I never should have let things go on as they did - good angel
It was fun and exciting - bad angel
Given he is under the rules, it was his responsibility. - bad angel
If you were a good friend, you wouldn't cause him trouble - good angel

they both have very valid points.

I don't have to choose before Monday. I'm not really sure how to develop this into 'normal' friendship.