I think the fact that you asked him to leave and he didn't is why you should use the circle.
Asking any old entity to drop by is similar to using a ouija board, you don't know what you are getting.
Heck, I have used a circle and had it attacked and I really don't like to think about what the outcome might have been had I not used it. I have also left my circle and gone to bed without closing it - that was not clever and several things happened to me, none of which I understood at the time but I would rather not experience them again.
I have also done a shoddy circle in complacency and had things fly in...
Please think carefully since it will be hard to casually call a friend in the middle of an attack (IMG:
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