Which one was the best valentine's show on 7th Heaven?

Season 4.

Season 1 "Happy's Valentine".

Personally, I think 7th Heaven did way too many Valentine's Day episodes. They only did one Christmas episode and Thanksgiving. Oh yeah and Halloween. Two of those though were from the first season. I was glad to see this year instead of focusing on Valentine's Day they focused on President's Day. That was different.

Season 7, Lucy and Kevin's engagement, because it was sooo sweet. :D