It's hurtful to manipulate friends.
Robin is a single mother who needs someone to babysit while she is out on dates.
Robin wants her friend Penny to help her.
Robin asks Penny to help her with babysitting and offers to buy her dinner in exchange.
Robin invites Penny over to watch movies but when Penny arrives she makes up an emergency and asks Penny to babysit.
Penny is happy to help and spend time with her friend.
Penny feels used when she figures out what happened.