A literary genre is a category of literary composition. Genres may be determined by literary technique, tone, content, or even (as in the case of fiction) length. The distinctions between genres and categories are flexible and loosely defined, often with subgroups.
Before meeting her, he was moody and gloomy, because he had been rejected by Rosalie. After meeting Juliet, he insists that he could find no greater love than she, and wants nothing more than to see her always. It can be inferred that based on his behavior, he doesn't know that love really is, and that he's extremely rash in his decisions.
The statement given here is an example of : Paradox.
Explanation:
Paradox is when seemingly incomprehensible and diametrically opposite things are said together in tandem in a sentence to draw out a conflicting meaning out of it.
This is a clear example of paradox as in the given sentence we can see that there are two conflicts that are irreconcilable in any way.
The person who loses his life cannot find it because finding and losing one's life seems diametrically opposite yet the sentence does make sense in the sense of the rhetoric.