An affair is a romantic and emotionally intense relationship with someone other than your spouse or partner. Sex may or may not be involved in an affair, and cyber affairs can happen between two people who may never even meet one another.

How long does a relationship that started as an affair last?

According to WebMD, the “in love” stage of an affair lasts 6 to 18 months, on average. And around 75% of the marriages that start as affairs end in divorce. Considering only 5 to 7% of affair relationships lead to marriage, thats a grim statistic for couples hoping their affairs will last forever.