It might also be possible if you are with Alexis but withold some info from Layla, tell her Alexis was just a hook up in the bunk scene. i'm still to finish this one so i'm not sure.Just replay the game:
1 play (Layla Lame): Just up Layla/Elena Points
2 play (Layla Wilder): Do Alexis stuff until the Bar Break UP (after the photo at Erynns) and afterwards with the Erynn - Alexis Drama. From there on just UP Layla and Elena anymore. In the Pizzaria when you meet Layla and her Sister you talk normaly with Alexis, help her and just let "her go" when she talks with MC at her car so the releationship between them will Zero. Anywhere between this part is an Trigger or something, haven't looked at the code myself.
But yeah, romance Layla, lots of points with both Layla/Elena.
Also squeezing some tits if you do it correctly