But Holly isn't Ian exclusive and has a large chunk of content on Lena's path. Lena, Ivy, Mark, set-up for Marcel and even Robert and Stan.
Ians chapters are more and more lackluster, though admittably the tournament, book contest and vacation may put him in the spotlight more. I hope he starts committing instead of being half-assed with Holly and Alison and can give Cherry and Emma more attention. And Jessica was a sidething to begin with and is disappearing quickly. I hated how we couldn't control his actions on the birthday party (and Lena couldn't even sleep with any of the boys, she is automatically directed to some meaningless Ivy sex, which feels more like a consolation prize than a reward for trying to get the man of your choice for this special night). The Lena focus in chapter 10 and 11 turned this game more in a fuckfest, the threesomes seemed more distant and out of obligation compared to the Alison threesomes which has a lot of different outcomes and aspects to it.
Ian can underperform or outperform, he can secure his soon-to-be-girlfriend or can impress a mere sexfriend, can potentially impregnate her or let her be impregnated. It can end awkward or a fun experience for all three of them. There are stakes and drama brooding. Ian/Lena/Louise was dispassionate, Ian and Louise had no development, there is no conflict with Jeremy, no potential jealousy, conquering Louise or falling for her, strengthening his bond with Lena etc.. Ian doesn't even comments if Louise is an utter sub to Lena.