Actually, it does

Even as you hold your fiancee, your mind begins to wander. Lily had seemed genuinely okay with you sleeping around. Sure, she seems happy to be exclusive with you, but it sounds like it wouldn't take much effort at all for her to accept you sleeping with someone else. So many possibilities race through your mind, and you feel stupid for not considering them earlier.

Maybe there's still a way to pull this off, now that you know how Lily feels. You just need to keep alert to the right opportunities.