I dont know if it is a book or not but they will be guilty of planning/doing it sorry if the answer is bad
You could maybe at a point where Bella and Alejandro meet before she knows it’s him. It’ll make it more of a surprise if she already knows who it is, and was unsuspecting when she first met him.
Answer:
the second one
Explanation:
well first lets find out what a run on sentence is
a run on sentence happens when two or more independent clauses are connected without using a comma, semi colon or a colon
in the sentence I went to the park then I went home there are two independent clauses, I went to the park and I went home. these independent clauses are not connected properly therefore this is the run-on sentence