According to my knowledge and understanding, in the ending of " I Have a Date with a Zombie 1," Kuang Tianyou indeed had Kuang Guohua's memories. This was because at the end of the story, Kuang Guohua and Kuang Tianyou were frozen and stored in a device similar to a memory storage device. In this device, the memories of Kuang Guohua and Kuang Tianyou were preserved and might be reactivated by Kuang Guohua's descendants or Kuang Tianyou in the future. Therefore, at the end of " I Have a Date with a Zombie 1," Kuang Tianyou indeed had Kuang Guohua's memories.
Kuang Tianyou wasn't with any woman in real life when I had a date with a zombie. In the novel, he ended up with Cheng Dieyi, but in the movie version, they broke up because of the plot.
In 'I Have a Date with a Zombie' Kuang Tianyou is not the son, he is Kuang Fusheng's son.