There have been rumors about Lexie for a while. I assumed they were true because the actress looks too young to have an adult relationship on a soap. Granted she is a teen, but on soaps most teens are played by actors that are in their early 20's, I think BH was 21 or so when she played teen Elizabeth even though JJ was actually a teen. Sbu was late 20's and BH still looked really young. But Lexie looks too young.

It would be weird to see her as an actress with BB as Johnny or the actor that plays Ethan. So if they want to move her to an adult relationship instead of a teen romance (and there are no teens) she would need to be recast.