Is AUTHOR wrong in the post ? POST : TL;DR at the bottom. 

It's Christmas &amp; around 1, my dad asks if I want to come over for lunch. I love my dad &amp; after everything we've been through as a family, I make it a priority to spend time with my family. 

My bf &amp; I  go &amp; hang out in the backyard since I'm uncomfortable going in the house bc the lady he lives with had made me feel unwelcome. Also she doesn't like my bf so he's not allowed inside. 

My dad knows I don't like going inside but he tries to get me to go in for soda. When I don't, he calls me lazy. My brother goes for me. We chill, have walnuts, pecans and chat. Then he tells me that there's food. I was expecting for the lunch to already be served, not that I'd have to go inside to go get it. Same thing happens, he tells me to go inside "No one's there"  My bf goes &amp; gets us plates. 

After the "lunch" is over, he messes around with a kid the lady adopted. He keeps going in &amp; out of the house. My dad bought the kid 2 presents &amp; I didn't get anything. Not that I wanted or needed a gift, but I'm his actual kid. After an hour of this, he just doesn't come back. He goes inside, doesn't come back. So I just chat with my brother &amp; cousin. We're probably at his house for 2-3 hours at this point &amp; after not seeing him, I realized he wasn't coming back out. I'm upset now bc I feel insulted &amp; ignored. 
I decide it's time to go.  

I text him bye &amp; go home. 

I didn't get to spend time with my dad like I wanted to. It's like he just invited me over to ditch me. 

TL; DR: Dad invites me for "lunch", then ditches me after an hour or so. 

Am I the asshole for feeling upset &amp; for leaving? 