tony has always been a show-off. with his money, his brain, his armor, everything is a show. to those who don't know him well it's the overcompensation game of an overly wealthy alpha.
but tony is a loving, passionate, good-hearted man, so those who really know him know the truth: it absolutely is a game, and it's a game that he revels in.
even when he and Peter started dating Tony liked to show off his new omega just a little bit. he would have shown him off more if peter allowed it. sure, peter liked it too (more than he was comfortable admitting to himself), but it just isn't a world that peter is comfortable with yet.
still, despite knowing all this, nothing could prepare peter for tony's first rut.
most alphas are difficult to deal with in rut for multiple reasons. they're territorial, temperamental, single-minded, and stubborn. surrounded by the avengers, all a threat in their own right, peter figures tony is going to sequester them in the lab and fight anyone who comes close. he's reasonably worried that tony might kill Captain America.
except that's not what happens at all, because tony is a show-off.
and because tony isn't overcompensating or insecure, he knows the truth, which is that the entire tower is his territory.
tony spends a week knotting peter in the community living room, in the kitchen, in the gym. He will physically carry Peter to a room he knows another avenger is in and spread him out like an illicit feast. there are nests scattered throughout the penthouse, pillows and blankets where peter can get fucked in front of a norse god in relative comfort. After three times, Peter isn't even able to be embarrassed anymore. and it's a lot more than three times.
