Well I denied Seymour and Ian and Lena never was a thing in my playthrough. Ians with Allison and Cindy, Lena is banging all females she can get her hands on..Since Lena is going to spend early part of this next chapter with Seymour, and she has potentially broke up with Ian by the end of Ch.12 i'd guess it's not really guaranteed to be about Lena/Ian, and especially not all about that.