After the party, you should get a datapd near your bed from [spoiler]Mordin[/spoiler] detailing his time on Omega. The pad basically said he had sex with an Asari. The Asari tried to kill him after it. He bested her with a grenade and she escaped to Afterlife. Here's the kicker: [spoiler]He says that he "Broke Omega's one rule". Implying he had sex with Aria.[/spoiler] Holy sh1t.