Do people rather find their ex when they face trouble?

I have received my ex calling on midnight.

*Ring tone*

*The phone screen appeared my ex name*

Me: Hello.

Mr. L: Hello, are you sleeping?

Me: Nope, i am preparing to sleep, what happen?

Mr. L: Nothing lar, just want to chat with you.

Me: Are you sure? Must got something happen on you, just tell me.

Mr. L: My phone remaining no much credits so if the line cut off means my phone have no more credits.

Me: Okay, just tell me what happen with you.

Mr. L: No, nothing happen.

Me: I am doubt with it, you sure got something happen.

Mr. L: I have been rejected by Miss W(sound like so sad).

Me: What? Are you told her that you have feeling on her?

Mr. L: Yeah, but she said we just can be out going friends.

Me: Don be sad lar, just try again and wait until she fall in love to you. You already try your best and if you guys have fate then no need to worry for it. Just take it easy. Bla..bla..bla...(consolation)

*After 20 minutes more*

Mr. L: Thanks for your accompany, I'm feel much more better now. Wait a minute, why we already chat so long time but my credits still not finish yet?

Me: Maybe you are using friends and family service to call me.

*Line cut off*

This is not the original conversation though, I can't remember word by word for what we have chatted.

My point is, "do people prefer to find their ex when they face any problems"? If yes, why?

Do they want to get back with their ex? Or they just simply want to chat with their ex?

Do they lonely?

Do they have any intentions? Or not perhaps?

I have heard some cases from my friends about their ex phone calls but still cannot find out the consequence.I am so curious about it lar...