"You fell from the flower pots on the third floor"
That doesn't sound right, I'm pretty sure he just dropped a flower pot accidentally while she was on the street.
I don't understand her motive of falling in love. The only thing we know so far is the she literally fell from the third floor. Apparently it was the MC's fault. He went down to check on her due to his own fear of being implicated. He didn't really do anything for the girl to fall in love.
@Mikeceara The thing is, she thinks of herself as some sort of monster that doesn't deserve any kind of relationships, with low self-esteem, thus as MC wants to get closer to her, she is just happy that someone would be even interested in her, something along this line.. Anyway as someone already said, this is gonnna be either good or awful, depending how author wants to take things from now on..