SPOILERS
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YOU ARE MOST CERTAINLY CORRECT!!
When Tia found out she had morning sickness and it was a Lord's meeting and Perez had all of Tia's favorite foods served...
But the TIA SIGHED (coz she was queasy) and Perez interpreted it as Tia being mad at him... Perez told the trio and the trio told him that Tia must be having some sort of wedding jitters...
Perez was so PANICKED!!!
Tia told him to ease him then Tia told everyone over dinner/breakfast and Gallahan and Grandpa was so mad at Perez but they weren't mad at Tia.
Then Gallahan talked to Perez privately and Gallahan was like "i hope your child isn't a girl." And then Oerez was so shocked as to why then Gallahan was like "try to imagine that you raised such a precious daughter with all your heart and then a thief steals her away at night."
Gallahan is vicious and I LOVE IT!!!

Are you going to kiss now?? Just kiss, get married and have a child