How Complicated Love Can Be

At the conclusion of Book I of Wharton's The House of Mirth we find the characters intertwined in what seems to be a love pentagon.  Rosedale seems to be in love with Lily, who is kind of obligated to spend time with him through her debt to Trenor.  Lily loves Selden, and Gerty, who also loves Selden, knows that and knows that Selden love Lily.  But at the very conclusion, as Lily is eager to share her life with Selden, we learn he was left for Havana.  This series of events is the most developed Gerty was been throughout the entire work, and she assumed an amount of importance when she encouraged Lily about getting through the night.  Gerty betrays her initial reaction of hating the sight of Lily because she is a good person and was unable to allow another woman to suffer so much, especially her friend.  Lily also develops into a woman who, after being shaken up by the remarks and actions of Trenor, found "the thought of confiding in [Selden] became as seductive as the river's flow to the suicide," (Wharton, 141).  Rosedale also seems to be after Lily with a new found resolve, and it was almost too convenient for him to appear at her doorstep the hour she most wanted Selden.  He proves to be the same shallow man when he offers Lily nothing but an endless supply of wealth.  Frustration is mounted when, in the closing paragraphs, Lily appears to give into her desire for such wealth, yet she is unable to write a letter to the disgusting Rosedale.  Could this mean Lily is finally moving into a phase of her life that would include chasing a mate she genuinely loves, instead of continuing to pursue her goal of marrying rich?