In my point of view I think that these Three things are the root cause that Puts an End to a Relationship
1. Lack of Attention
2. No Communication
3. Being Friendly/ Flirting with Others .
If you Know , Add More ???

4. Violence/abuse
5. Cheating / betrayal of trust

I would say simply end of love?
Sometimes you still get along reasonably well, don't cheat but love has gone

1.Honestly and respectful most important


He would already be attentative and good conversationalist or we wouldn't be in a serious relationship.


I wouldn't mind him being flirty.

1. Expectations
2. Delusions
3. Emotional Immaturity

Ownership ~ your boyfriend/girlfriend, husband/wife are not your property.
They are not your slaves.
They are people with unique feelings, hopes and dreams just like you.
You do not live behind their eyes and they do not live behind yours.
They are not your children.

No intimacy.

its not the surface noise.....

the purpose of a intimate relationship to finish childhood....to work through

the unresolved issues you brought to the relationship.....o.k. time for ''yes

but''

that's why all relationships need work by both parties.....looking for a poo

free person will not work....because everyone has hidden agendas, the issues

come out when the correct button is pushed.....the secret is to work on your

own self-awareness, ''the better you become, the better people you will

attract into our life''...


P.S.

SO we have apart in the start up, the direction it takes and how it

ends....O.K. TIME FOR ''YES BUT'' AGAIN.....

Addictions

Manipulation to instill fear.
Lying.
Betrayal of trust.
Drug abuse.

i have one last thing to say at this time,,,''WE TEACH PEOPLE HOW TO TREAT US

BY WHAT WE ALLOW, WHAT WE STOP, AND WHAT WE REINFORCE''.....Tony Gaskins


THE tendency for most of us is to put the blame '' out there '' when things go

wrong, and not see ''our part'' in it.....good luck....

Poor hygiene
Dishonesty
Addiction

poor hygiene

The "root cause?"
People are finite and fallible with flight/fight/procreate/homeostasis instincts?



These seem more like symptoms, not "root" problems/causes.

Like "lack of attention."
Why? Is this normal or did something change?
If normal, why was the relationship developed? If one expected the other to change and give more attention, then closer to the "root cause" is expectations, not the amount of attention. What lead to those expectations?

If changed, who changed? Did one person stop giving "enough" attention? Or did one person start needing more attention?
In either case, it means something else is going on. So "lack of attention" isn't really a "root" cause, it's whatever caused someone to notice, start, or react to that "lack of attention."

"No communication." What does that mean? An absolute? Like ghosting?
Someone withdrawing and when asked they respond "fine," and then start self isolating?
Were they always a stoic and the expectations were they'd change? Again, why are those expectations developed?

Communication is a two way street (unless it's in a sub/dom relationship).
People need to learn how each other communicates and change to adapt.
Is one person not learning how the other person communicates, and over time they're getting frustrated the other person isn't learning their way?
Again, not really a "root cause," as many variables influence communication in a relationship, and "no communication" itself can mean something different entirely.
"Communication" is ultimately a tool. It's used by something else. So not a "root cause." Since it is complex it becomes like wind, you can't measure it directly, but you can measure how it's affecting other things.

"Being friendly and flirting with others."
Again, is this something new? Or is it who they are?
Were they friendly and flirty with you when you met them and you expected them to stop?
Or have they just recently started being friendly and flirting? With everyone?
Or just potential new mates?
Again, doesn't seem like a "root" cause, but indicative of something else.


Even taken all together, if it's ending the relationship, if someone stops giving attention, stops communicating, and starts being friendly and flirting with others, that is indicative of some other "root problem" going on. Not those things in and of themselves.

What about the "patience"?

Hate lier!

Liar's, manipulating, inconsiderate

Possessiveness.

Cheating, betrayal, disloyalty
Disrespectful
Untrustworthy

Lack of empathy
Lack of forgiveness
Lack of self confidence

prudishness.