I got mad at my father for “intruding” on bonding time I set up with me and my mom. We were going to watch a bit of YouTube together when my father came into the kitchen right before we started watching. He asked some questions about the video we were looking at, but I thought he’d leave by the time we start watching. I thought so because just before this, I told him that my mother and I would be spending a bit of time together to eat and watch a channel we both like. He said that he understood it and that’s where our conversation stopped. He was grabbing food at the time and so I figured he’d be going to his room to play a game with his friends. However, when the video started, I could hear him sit at the table behind the couch that both my mother and I were sitting at. I hoped he’d at least stay quiet as I had already told him what was happening and he didn’t ask to join us or if it’d be a bother for him to eat behind us, but within the first minute of the video starting, he said something about how a house in the video looked familiar. My mother began speaking with him about it and I was stuck sitting next to her while feeling like a third wheel to an occasion I set up. As the video continued, they would make comments to each other about things they saw and memories they had from a long time ago. I didn’t want to make a scene for something as small as them talking, but I was getting increasingly frustrated with every comment he had. I wanted to spend time with her and I specifically didn’t want to spend time with him. We’ve had arguments in the past and the most recent one has made me decide to treat him differently, so I’ve been clear about when I’m trying to be alone with someone. Before five minutes of the video passes, I decide I can’t sit there with him talking, so I stand up, apologize, and say I just can’t be there right now before going to my room. As I get up, my father says “did I do something wrong?”, but I don’t answer. I begin to talk to my self about the whole situation when (within a minute after I get to my room) my father enters and tells me, “I don’t why your mad at me again, but I left. So you can go back to sitting with her without being offended about my presence.” I try to tell him that I was mad he decided to sit in without asking and he tells me, “oh what? I can’t sit down and eat in my own house anymore?!” I say that it’s not about him eating in his house, but that I told him I was spending alone time with her. He says something about me always hating him and that I think he’s a bad person before slamming the door in my face while I say that I never said anything like that and he thinks that on his own. I begin feeling horrible for leaving my mother so I eventually go back to apologize multiple times. She asks if I want to finish watching the video and I say, “I’m sorry, but I just can’t. Im sorry”, and she sighs before saying okay and I leave. I continue to feel horrible, so I eventually go back again to apologize more and explore that I left because I wanted to watch the video with her and I felt almost not included when they were speaking. She says okay again before turning off the tv and standing up to go to bed. I said to her “Do you care? Do you even care that I left?”, and she replies with, “Yeah, I understand that you get mad when he’s around and I understand that he was just sitting down, eating, and talking like a family. I wish you two could get along, I do, but sigh I don’t know.” I’m confused by she’s taking his side when not only did he intrude, at least from my perspective, but he also didn’t apologize for it, nor stay to be with her.” I’m still frustrated and a bit confused now, but I think I could have done better. I think if I had just stepped away for a minute to calm down, then it might have gone over more smoothly. I’m not sure, but I still feel horrible, I don’t know. Am I the asshole?