Well I decided to make multiple saves since I actually like several of the L.I. options, but Lexi was the obvious pick for me initially since unlike Erryn who apparently also might have had feelings for the MC, she was actually willing to take a chance and pursue him. Other than her fear of telling Erryn about them hooking up, and what it would mean for their friendship, I feel like she knows what she feels for the MC and is not interested in playing mind games.
I do feel a little sad for a potential what could have been relationship between Erryn and the MC had he never left and just confronted her about their misunderstanding without anyone else there, but other than missing her childhood friend, I never got the impression she saw the MC as anything other than a little brother. I like the more compelling romantic story of the MC stealing Lexi's first kiss and becoming her own teenage crush, only to meet him again by chance on the flight back to see his mom again.
As for Nikki vs. Cara, I was more of a Cara fan, but I'm glad I made multiple save paths since I also still like Nikki and Layla as well. That said, I am curious what a relationship with Erryn would look like, but I'll get to that path later.