This one just felt weird? Like weird annoying. Honestly, just show your boyfriend some of these texts and be like "Hey, you remember how we were at home last Friday? Someone's claiming to have been with me during that time." If he won't listen to you and help get rid of the horror, he wasn't a keeper.
But yeah seriously, what's the point? Doesn't seem like anyone was getting hurt, the doppelganger never went after her. It was like the most low-stakes identity theft story.