It's wrong to consider old lovers while married.
Summer and Russel have been married for 8 years and Summer has a high school reunion approaching, and she knows her ex Robert will be attending.
Summer wants to go to her reunion.
Summer says hello to Robert and tells him all about her happy life with Russel.
Summer asks Robert to dance which reignites old feelings.
Summer and Roger are happy to have caught up, and Russel is glad his wife enjoyed herself.
Summer and Roger end up kissing and now she feels horrible for cheating on Russel.