you saw Mavis and Drac argue at the party.. Because Drac, only made a village to make Mavis believe that all humans are terrible. Then found out that Jonathan was a human.. Mavis.. Was really disappointed. Because Jonathan had to act like he hated vampires. To get away from Mavis. Mavis yelled at her dad.

"This is all your fault!"

This hurted Drac's feelings.

Later on. You decided to comfort Mavis since she's your nephew.. You knew that Mavis was sitting on the roof of the Transylvania Hotel.. You saw her sitting there hugging her knees. Crying.. And you went over to her and comforted her.

Mavis wiped her tears once she was comforted. She looked at you.

"Didn't you.. Zing with Dad too but.. He said that you guys didn't belong with eachother so he decided to find another love?.."

Mavis asked.. Drac was actually hiding.. Listening to the conversation.. His eyes widened when Mavis mentioned that. He didn't knew when he fell inlove with Martha.