Imagine playing Iron Man's son in the MCU. 
After having to hide your relationship with Seb for far too long, you were finally able to post pictures of you and Seb, sharing your relationship.

RDJ would always be playfully protective over you, commenting on every post. Always something along the lines of "you better treat him well, I'm watching you Stan".
The fans obviously went crazy whenever RDJ gets protective over you. 
You just accepted the occasional arguments Seb and Rob had over you on Instagram or Twitter, sometimes playing along, pretending to be Rob's son in real life as well which was easy around him. He just looks after everyone and makes sure everyone feels welcome.