Dear, parental figures. . .
I think Grendel get stuck in a tree because of his careless curiosity of the world above him, that of the humans. He know nothing about that world because he was used to his own world in the underground however he still get tempted to explore. He was also attacked by a bull there because he looks different from the rest of the creatures above.
I believe that the first answer, recovering from love, is correct. Because he could not recover his love, which is sometimes referred to as a fire, he is sad or in emotional pain.
No i’m not because there isn’t anything to do anyways
