It's good to pay attention to your host.
Leah is in a circle talking to a few people at a party when her friend who is hosting the party walks up.
Leah wants to get the attention of a boy at the party.
Leah asks the boy she's interested in how he knows the host, sparking a three-way conversation that includes the boy she's interested in.
Leah ignores the friend that just walked up and instead tries to start a side conversation with the boy she's interested in.
Leah's friend sees what Leah is trying to do and helps her hit it off with the boy.
Leah's friend is unhappy and doesn't invite Leah to the next party she hosts.