Living with Oliver was still kind of weird for the Googles. Red was the one who most often mistook Oliver for their lost brother, asking him to make things or repair stuff, before remembering. He liked Oliver, but it was hard for him.
Green often forgot, but it wasn’t obvious. He’d look at Oliver and wonder about something -like what he was tinkering on at the moment, before remembering. He didn’t often mistake him verbally though.
Blue though never mistook him. Of course not, Oliver was his boyfriend, and he loved him a lot. Only sometimes, when Oliver did something his brother used to do a lot, did he get reminded and get sad.
But they all got used to having Oliver around. They made sure that Oliver was happy and could do whatever he liked, and the other egos made sure that Oliver knew that. The Googles included him in what they did, and no one ordered him around or ignored him.