When Jasper's father pretends to be a priest and give him a gun he speaks several Latin phrases. The first veni, vidi, vici means I came i saw i conquered and is thought to be said by Julius Caesar.
When getting into a fight with willows mother Helena mentions the t.v. show Dynasty. Joan Colins who played Helenas mother played a major role in Dynasty. Dynasty also has royal connections as well. Catherine Oxenberg who also was a major character is the descendant of the Russians and English royal family through her mother Princess Elizabeth of Yugoslavia.
After news broke in 2017 about Mark Schwahn's rampant sexual misconduct while he was in charge of the series "One Tree Hill", Lionsgate ordered an investigation and found that Schwahn had engaged in similar disgusting behavior on their series. The studio fired Schwahn and made little effort to keep the series going afterwards, which is the main reason it was cancelled in 2018.
Willow going down the aisle to music with lyrics like "I'm a creep, I'm a weirdo" is very similar to Maria walking down the aisle to "How do you solve a problem like Maria" in The Sound of Music.