Title is pretty self explanatory. 
Dad wanted to take his girlfriend and I out to eat. Went to a really nice family run Cantonese restaurant, the staff were friendly, the food was great and they even gave us a complimentary dessert.
At the end my dad paid and I noticed he didn’t leave a tip and I called him out on it, I would’ve left a tip but he said he was paying for the meal so I didn’t bring my wallet and I would assume that paying would include the tip? 
Anyway after calling him out he left a tip but was mad at me for the rest of the night, am I the asshole here? 