I’m just speaking from experience growing up in churches. The people who would go to church and only behave because they think God is watching are the people trying to get their reward from it. I’ve known some really decent people, but they were very rare. The majority were there for themselves.
The thing is I’ve seen many of those same people keep the rhetoric, but leave the churches for the most part.
Allergies maybe? Most women use special makeup for dates. It could be something she’s wearing like lipstick. It could be something in the food like peanuts or olive oil.