shultzz, I can see your point. I think that the statute of limitations is until the friend is in a new relationship or six months whichever comes first. I had a friend who had a similar scenario only without the statute of limitations. Her boyfriend of over two years dumped her. Not a year or two later, but a week or two later wound up dating her housemate. Imagine waking up in the middle of the night to use the bathroom or have a snack, and you run into your ex who is the reason you're awake in the middle of the night in the first place. Not exactly fun. She was so hurt and felt so betrayed by her ex and the woman that she had believed to be her friend. Her ex married her housemate years later. She married his friend. It all seemed a little weird to me.
Luckily for me, my friends' boyfriends have never been my type.