If Holly, who you with Lena have of course secured a high change variable, were to meet a handsome stranger on the beach, I wouldn't be opposed to her getting lucky if she isn't sexually involved with Ian or Lena already.
The player controlling Ian could of course try to protect her. Wouldn't you like that? A chance for him to fail at being a white knight?
This is one of the reasons I've been looking forward to this beach house set piece so much. Ian, who hasn't hooked up with Holly, hasn't had any real interactions with her since Lena's concert, and even that was a pretty short encounter. He's had a couple of inner dialogues about her personality or her attire, but hasn't actually had conversation with her outside of the coffee break at Hierophant, which consisted of like 3 lines exchanged.
Especially interesting I think, would be an Ian with a high Chad variable finally interacting with a Holly with a high change variable. Personally, I think it would be great to see the roles reversed and a high change Holly not be interested in a gigachad Ian.
I only criticise the contents of the scene itself. If Lena hasn't been fucking everything already it feels very sudden to go from "blushing virgin mode" to having a cock lodged in her oesophagus.
I guess?

Usually I don't have a "blushing virgin" Lena with high Lust stats, nor does my lesbian Lena usually surrender to "alpha cock" so I've not experienced this particular dichotomy.