Questions about the Ending (Spoilers)
In a critical scene near the very end, why is Amy showing up at Sarah's Mom's (the grandmother of Jack's baby) place wondering if "Phil" is still there? Who is Phil? Maybe I would understand her looking for "Bill" since Bill (William) and the grandmother get married at the very end so maybe they have been hanging out together with Amy during this time (but she definitely asks about "Phil"). This scene is critical since this is where Jack asks Amy to get back together.
Also there seems to be not enough info regarding the character of Susan. Do we ever see her? Is she somewhere in the background in the scene where it looks like Amy is marrying Alain? Supposedly she is a best friend of Amy but I guess I missed that part too. Where do we learn about her? It was frustrating not knowing much about this character, she comes a surprise, much like Bill's romance at the end. The other frustration is Alain and Susan's marriage which simply looks too much like it is Amy he is marrying.