I say wrong names a few times. If that's his only time, get over it. If he does it with the same name and often, depending on his age, correct him. My father (in his 70s) says the wrong name a lot for myself and my mom...

My wife is called Jessica, my dad called her Jennifer for 2 years

Just because you’ve been with your boyfriend for 2 years, that doesn’t mean his family is as invested as he is. Unless you see his dad every day, it’s not super surprising that he’d mess up your name from time to time. He’ll get there, don’t worry

You're not in your boyfriend's family until you are married. Real life isn't Olive Garden where you're family just by showing up, Jessica. Now, quit hogging the cake, Jessica, and slice a piece for Pop!

Is your name Karen?

Was it a one off or does it seem pointed? Also, how often are you around them? I used to accidentally call my brother's (now) ex-wife by his former GF's name when talking about her, never to her face, but my brain just blipped every now and then and called her the wrong name. It's unlikely it's intentional or a personal attack.

Growing up with five siblings, my mother would regularly call three or four wrong names before getting to the correct one, and she picked them out. Unless it seemed intentional, probably best to chalk it up to human error and let it go.

Depending on what your name is, if it starts with a j for example, it was either a mistake or...his other girlfriend is named Jessica.

Just so you know if he's your boyfriend then you are not in his family.