Why is it bugging me that my guy friend said I was his girlfriend’s but it was a joke?

So I know it was a joke but when my guy friend and his mom came over we all had a chat and caught up since we know each other well.
My dad asked my guy friend if he had a girlfriend and he said no. He was like why not. He looked stroked. Then he said that I was his girlfriend. My face got bright red. I was like, “Oh we’re a thing now?” His mom said, “Well you know now.” My dad hugged him. I know they’re just joking but now I’m kind of upset. Nothing wrong with my guy friend but I don’t see him that way. I never dad. I know he liked me back then but he never called or asked in on a date. He asked he to go to the school dance several times. I did go with him twice but we’re JUST FRIENDS. My dad knows I’m single. What if my guy friend really asks me out! I love being single. Plus we grew up together and I don’t want to ruin our friendship.

Why did my dad have to ask that question? Then I would still be single! 🤬🤬🤬🤬

Joking but still.

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Plus I’m not attracted to him and I want to at least date around when I’m ready to go into the dating world.
Why is it bugging me that my guy friend said I was his girlfriend’s but it was a joke?
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