First two phrases in this paragraph, I would think. It describes two very contest ideas about love.
Answer:
The door
Explanation:
While many might say the fridge needs to be opened first to prepare breakfast, note that it does not say that the parents are in the house, and therefore they would need to be let in. Hence the answer of what to open first would be "the door".
Everything but C has a saddened tone to it because it shows a bit of pity or jealousy towards some of the sentences.