Bet she was blonde
The young secretary was describing her evening's exploits to a friend.
"After dinner" she said "he wanted to come back to my apartment but I refused. I told him my mother would worry if I did anything like that".
"That was smart" her friend said, approvingly, "then what happened?"
"He kept insisting, and I kept refusing," the secretary said.
"You didn't weaken your resolve did you?" asked the friend.
"Not one bit. In the end, we went to his apartment.
"After dinner" she said "he wanted to come back to my apartment but I refused. I told him my mother would worry if I did anything like that".
"That was smart" her friend said, approvingly, "then what happened?"
"He kept insisting, and I kept refusing," the secretary said.
"You didn't weaken your resolve did you?" asked the friend.
"Not one bit. In the end, we went to his apartment.
Spoiler: