Love Is A Masquerade (слэш)

*loudspeaker noise* Please present your tickets here for your trip on the Steve/Tony Fantasy Trope Land express. On your left we have Masquerade Balls and Identity Porn; on the right we have Steve's Thirst for Iron Man's Thighs and Dramatic Balcony Kissing. Please keep your arms and legs within the ride at all times, thank you. Also featuring Classic Iron Man armor, Identity-Porn-Without-Porn, and Boys-In-Tights. You will need to leave your expectations for plot at the entrance to the fic; be kind and please pick up your trash before you go. Look, it's unrepentant fluff and crack, don't look at me like that, you're the one still reading this summary.
[aka]
When the Avengers are invited to attend Tony Stark's Annual Masquerade Ball, Steve's hoping Iron Man will be there--after all, he can wear a mask and keep his identity secret. So when Steve recognizes Iron Man's distinctive thighs, Steve is SO sure he's found Iron Man's pilot... He's right, but not in a way Steve would ever have guessed...