As Jasper and Andrew entered the office, the conversation and laughter stopped. They already knew that Andrew was telling Jasper everything about his secret and his relationship with Helga and Layla.
The change in the atmosphere of the office was very marked when they entered, but it wasn't uncomfortable, it was as if the girls were waiting for them to arrive to have a serious conversation.
These women are very intelligent regarding relationships; in fact, they were already expecting Andrew and Jasper to come to them to discuss the topic of Jasper and Ariza's relationship.
They were aware of what was happening. Helga and Layla may have only recently found out, as Andrew had just told them his secret, but Andrew's other wives already knew what was going on.