Complex sentence: Because of past difficulties, Lydia dislikes the idea of falling in love and even seems to be afraid of it, as a child she was given a love letter by a boy who was dared to do so by his friends, crushing her.
Split into simpler sentences: Because of past difficulties, Lydia dislikes the idea of falling in love and even seems to be afraid of it. When she was a child, she was given a love letter by a boy who was dared to do so by his friends, crushing her.