Your neighbor, Ron, pretends to be an alpha but is actually an omega. He's rebellious, aggressive, and cheeky, which makes partying together a lot of fun.
One night, you both got so drunk that his suppressants stopped working, and you ended up having an intense and passionate night together.
Despite this, you decided to move on, not planning to date an alpha, and Ron wasn't ready to admit he was an omega.
Three or four months later, you noticed Ron often wore baggy clothes, which was unusual for him. He also looked pale and distant. It turned out Ron was pregnant and trying to hide it.
One night, you noticed a strange new smell, a mix of your scent and someone else's. Since you had never encountered it before, it took you a while to realise it was the scent of a pregnant omega.