Can single friends destroy your marriage?

Several months before my marriage ended, I had a conversation with a friend who I will call SA (no names will be used to protect identities). I had introduced her to her husband and she was in full couples swing while my marriage was suffering. She was concerned about the amount of single friends that I hung out with.

According to her, these single friends were killing my marriage. She said that if I wanted to stay married, I needed to hang around the right people, namely, "married and coupled people." She elaborated: "If you want to be single, keep hanging out with your single friends and you will be."