Who said "We are nature's greatest love story."?

This quote is attributed to Groot (Variant).

We are nature's greatest love story. - Groot (Variant)

"We are nature's greatest love story."

Groot (Variant) Love

"I am Groot."

"We are Groot."

"I am Groot. I am Groot. I am Groot."

"The greatest gift is the time we spend together."

"I love my wife, but sometimes she drives me crazy."

"Love conquers all obstacles."

"Love is patient, love is kind."

"I'm not stupid, I'm just in love!"