Dought & clear, - He divorced his wife because she was mentally ill, but he is still emotionally attached to her and wants advice- visit-http://aydnajimudeen.blogspot.com

My ex-wife has bipolar disorder, and we have now separated, and I do
not intend to take her back. I love her very much; my heart wants to
take her back but my head says no. I would rather suffer the pain of
separation than go back to her, because then I would also go insane.
Such is this world; things will never be perfect. Praise be to Allah
for what He has decreed.
I need to be comforted and I need to be completely convinced, once and
for all, that I should keep away from her, because she still contacts
me by phone and I sometimes answer her, then she starts to swear at me
and insult me.
Praise be to Allah
It is part of Allah's decree for His universe that He has made this
world the realm of troubles and problems, sickness and separation,
exhaustion and tiredness, as trials for His slaves, to see whether
they will be patient or impatient, and so that they will long for the
Hereafter, Paradise and that which is with Allah, where there will be
no toil, distress, exhaustion, hardship, grief, death, sickness or
separation. This is Allah's decree for His universe, and the way of
Allah cannot be changed.
In your words there is the answer and remedy for what you are faced
with. Your relationship has come to an end with separation and
divorce, and you do not intend to take her back. She is sick,
suffering from a mental illness with which it is impossible to
establish a normal marital relationship. What appears to be the case
is that you tried but you did not succeed, so what comes next? Why
hold onto a rope that has already been cut off? Why live in the shadow
of wishful thinking and impossibilities?
You gave a clear answer to these questions, and we appreciate your
openness: "my heart wants to take her back but my head says no." This
is the entire story and the entire solution. The heart is inclined but
reason corrects you and prevents you from stepping onto that slippery
slope.
But you have to give precedence to strengthening the resolve of your
mind, so that you can forget about her completely. That may take some
time, but in the end it will come, according to your strength, resolve
and certain faith that Allah will compensate you with something better
than her and will compensate you for the calamity with something
better and will reward you for what you have suffered.
Ibn al-Qayyim (may Allah have mercy on him) said:
If there is no way for the lover to reach his beloved, either because
it is not divinely decreed for him, or because of some shar'i
impediment, or both, then this is an insurmountable problem. Part of
the remedy is to make himself lose hope and despair (of ever reaching
his beloved), because when one loses hope in something, he will be
relieved of worrying about it and will stop paying attention to it.
If the sickness of love continues even though he has given up hope,
then this is a sign that he has developed some serious psychological
problems. In that case he should move on to another remedy, which is
to address his mind and think rationally, because it is known that
being emotionally attached to that which one has no hope of attaining
is a kind of insanity; the one who is afflicted with that is like one
who falls in love with the sun and thinks constantly of claiming up to
it and running in its orbit with it. Such a person is regarded as
insane by all rational people.
End quote fromZaad al-Ma'aad, 4/251
You are still young, as you stated in the details you gave that you
are thirty-four years old. It is not fair, it makes no sense and it is
not wise to spend your life regretting what you missed or something
that cannot possibly come back under any circumstances. Look for
another wife who is suitable for you, and start a new page in your
life. Life does not stop because of separation or failure, and nothing
could you make you forget a woman except another woman who is more
suitable for you.
Ask Allah for guidance (istikhaarah) and look for a wife who will
bring you happiness, and cut off all ties with your ex-wife, once and
for all, because she is no longer permissible for you now, as you are
divorced, and there is no point in keeping in touch with one another
on the phone. If you can change your phone number, then do so, so as
to stop her calling you and causing you distress.
It should be noted that forgetting may take some time; as we said,
that depends on your strengths and determination. Ask the Controller
of the hearts to remove from your heart whatever is left of this
relationship and ask Him, may He be glorified, to reward you for your
calamity and to compensate you with someone better than her.
We ask Allah to grant you peace of mind, a bright future, and a
righteous wife who will compensate you for what you have missed, and
that Allah will grant you the reward of those who are patient.
And Allah knows best.