When it gets one-sided, at least one, if not both, people involved aren't being true friends.
If you ignore his attacks, he will become bored with the one-sided battle and give up.
Maybe accepting a date would be the perfect way to end this one-sided relationship.
If he wanted to discuss her father, it was going to be a one-sided conversation.
She said she was near the big one-sided McDonald's—she meant the arch.