Note: You can watch a video version of this here.
A viewer writes: Abel, what do you think about a widower that keeps an ex as a "friend" to pull back in when he is in between relationships or when his current relationship is difficult? If the friend were "the one" wouldn't the widower keep them in that place in their life instead of using the friend as a place holder when they are broken and lonely?
What you're really asking is if she's being used--and she is. I'll get to that in a minute. But you're missing the more important question: why does he still need someone to fall back to?
A man who keeps an ex on reserve isn't ready for a relationship. He's outsourcing his emotional life to someone he has no business leaning on, processing things with her that he should be working through alone, a therapist, or with his actual partner. A man who's done the work doesn't need a fallback because he's built something inside himself that holds. The fact that there's a "friend" on standby tells you exactly where he is emotionally and how important really are.
A man who's ready doesn't keep a bench. If there's still someone waiting in the wings, he's not ready for commitment and there's no incentive for him to give his entire heart to someone when there's someone ready to support him when relationship challenges arise.