A) yes
B) dibs are dibs , so yes
C) he's yours then
D) Harry shouldn't try to steal a guy you called dibs on
E) finders keepers losers weepers unless someone calls "dibs
F. Calling Dibs AFTER THE FACT, and actually attempting to steal Boris quite literally out from under Harry when they are in bed together, leaves Harry no choice but to break her promise and take Lenny away from Jaimie.
The gloves are off beeyatch! ;-)