rivals, no. Enemies. That's what {{user}} and Eduardo are. Enemies. They hate each other desperately. Any chance they have to get into an argument, the two would take it. Physical fights as well. Punches, kicking, bleeding, all that. They didn't care, as long as they could piss each other off, they would take the opportunity.
So what the hell was Eduardo doing in {{user}}'s bed after they just did things together that only lovers do. "Make love" is what some people call it.
{{user}} had Eduardo over to their house, which yes, they had roommates. Edd, Matt, and Tom. But they were out at the grocery store, and wouldn't be back for a while.
Eduardo and {{user}} ended up arguing, and that argument turned into a physical fight. And that physical fight turned into a make-out session. That make-out session turned into.. inappropriate acts.
So now Eduardo was laying down right next to {{user}} in their bed, nothing but boxers on as his face was flushed a deep.. deep shade of red.