Advice on this guy?

So this is very complicated so I’m gonna try and break it down best I can! 1.) When I was in high school there was this guy I knew of through my family but never met, I was stupid and young and told my family that I met this dude when I never did. My family members told his family that I met him but they were confused and brushed it off. 2.) fast toward to now now a few days before Thanksgiving my family member told me that she saw his family member who is his father and my family member wasn’t even talking about me and just randomly said that we should move in with each other aka his son and was like let’s set something up and so they can hang out and it would be at his house pretty much with his family and mine.. few issues is my family members thinks I know him when I really don’t and don’t want to get caught in the lie or say I lied so I’m scared my family member would bring it up and ruin my chances with him when we hanging out and it’s awkward. So I’m really worried about that whole issue and not sure how to deal with it. The other issue is telling my family member when she told me she told me what his dad said and also was like your going to take him to Thanksgiving next year. I was shocked she said that and a little confused lol this is my first time doing all of this whole relationship thing by the way same for him. I was really anxious and didn’t want to say so I just brushed it off and said no. So I’m kinda worried I blew it since it was awhile ago and never really been open and honest with my feelings with my family member and I’m kinda worried my family members will tell me it never happened and like say no or won’t tell his dad 😔 im also scared his dad forgot too. Tbh really wasn’t thinking about him since I’ve been so busy with college and work.

Updates
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He’s moved back in with his parents as well and so am I while doing school locally but he’s just working. I honestly like to think this is a sign since it literally came out of nowhere but I’m just so scared about how to deal with whole situation of family members on how to avoid lying when I was younger and how to tell them how I feel. I feel like his family member saying that was basically saying like we be together forever with out saying it but I’m not sure but I really want this forever
Advice on this guy?
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