Most Helpful Guy
I think there are always motives for "let's be friends."
For the dumper: let's be friends so I can pretend that I am letting you down slowly and that won't hurt as much, and then I won't feel so guilty about hurting a nice person.
let's be friends so, if I don't find somebody else ) or if the somebody else I already found doesn't work out) you'll be right here and we can get back together.
For the dumpee: let's be friends so that you'll continue to see what a wonderful person I am and you'll want to come back to me.
let's be friends so I can keep track of what you are doing and I can move in to interfere if you get into anything too serious.
let's be friends so I can be pathetic and pretend that we haven't really broken up and I won't have to deal with my broken heart.
Most Helpful Girl
No, it's an absolutely idiotic, delusional, unrealistic idea. You cannot be friends with an ex because you two have already crossed the point of no return. People who try to be friends with an ex are usually just trying to hang around, stay included in the ex's life, and give themselves a reason to remain hopeful that maybe some day they can try being a couple again. You guys are never going to be friends and it will become unbearably apparent once another woman comes along and he starts eagerly giving her all of the non-sexual things he's no longer interested in giving you anymore.