I really don't understand how Shan is a "two-timer". Jenna left 10+ years ago and broke Shan's heart, and and literally is now seeing Hari. Not to mention, given what we know about Jenna's personality, she was never really Shan's official lover, just someone who took advantage of Shan's vulnerability (not to mention every time they made love with each other, Shan was drunk? So it wasn't even something Shan did on her own accord).