Step Brother Plan

I closed my flat door and walked off to meet my Mum for lunch, that's what I thought. I arrived at the restaurant and walked in. Standing behind the bar was Andrew Wilson, the restaurant owner. I walked towards the bar and greeted Andrew with a handshake "Afternoon, Andrew, is my mum here? " I asked him, Andrew smiled ", Your family are sitting over at that table". "Family! What are you talking about? Andrew, my dad passed away three years ago" It dawned on me, I looked over at the table ", My Mum got remarried".
As I walked over to their table, my Mum saw the look on my face [Oh dear!!] Mum thought. Mum got up from her chair to greet me, and we hugged "Mum! Do you have something to tell me?" I asked her, "Yes, dear! I remarried and forgot to tell you," I just smiled "No!!! Mum," I replied, "Tom, this is your Dad, Simon Peterson, and your Brother, Tim Peterson" Mum introduced them to me.
I pulled out my chair from under the table and sat down. "Hello, sir. Nice to meet you and you, Tim," I said with a smile. "It's nice to meet you, young man," Simon replied. "Nice to meet my young brother, " Tim said with a smile. "Tim, I am not your young brother," I replied. "I may look young for my age, but not what you just said. You look and are built like a 14-year-old boy, especially in those shorts," Tim answered.
I am 5'6 "in height, small and slim, with a hairless body, an Olive skin tone, and a small waist. Dark brown hair, Hazel eyes. Simon Peterson. Height 5'10, stocky build, light brown skin tone, Jet black hair, Blue eyes. His son, Tim Peterson. Height: 5'11 ", light brown skin tone, athletic build, Green eyes, after his Mum, jet-black hair. My Mum, Height 5'7", Olive skin tone, Dark brown shoulder-length hair, Hazel eyes, and a firm body.