Carmen was in one-sided love, and she didn't know that until she got married to Liam, her high school crush. After getting married to him, his attitude towards her changed. But Carmen stayed in the marriage and endured his inappropriate behavior towards her. However, everything changed when she met Dax, and she later found out that he was her husband's best friend.
When Liam realized that there was more to Carmen and Dax's friendship, he knew for sure that he wanted Carmen all to himself.