Would you be hurt at this?

Been with boyfriend for almost 2 years. Up till now, we have only really spent weekends together as I live 3 hours away from him. Because of the lockdown, he decided to move in with me temporarily along with his teenage stepson who is 19 and there is also my son who is 9.
I thought things were going okay until I saw a post he was personally tagged in. It was a joke thing, 2 men having a conversation about how they are getting a hard time off their partners and how tough it is. I know it was a joke but I wonder why my partner was specifically tagged in it and now it has got me paranoid he is discussing the tough situation with his friends. Am I being over sensitive?