yeah that's default on Lexi path, the option I didn't get originally was at the end of the beach scene in the changing rooms... I didn't get the option to go into the room with Iris, just the one with Lexi, still not sure what the conditions are for that, but it must be the number of points you have with Iris (so you should probably be less affectionate with Lexi, dunno)... when I upped Iris points via cheats I did get the option to go into the changing room with her and then you get the ""I still love you" scene.