sexless marriage what to do?

I need help from you brothers and sisters. I am a man in my 50s and have been married for 20 years, I have got 3 children that I adore.
My marriage was happy in the 1st few years. But at some point, my wife's sex drive was only going in one direction and that is down and my sex drive has gone up compared to my thirtees. My wife's sex drive is now zero. For months I have been craving sex to the point of not being able to sleep. It is not my fault if Allah gave me a high sex drive that needs to be satisfied and the only hallal person that can satisfy it is my wife.
I have been patient for a long time and explained to my wife that this can't continue and she advised me to marry another muslim women as she can't cater for my ever growing sex drive. The problem is I love my wife and children and another wife can be another problem as she might not be.
for months I have been pushing my patience to the limit until a day came when I almost crossed the line of sin as I kissed an English lady and she kissed me back after I talked to her and were attracted to each other (she is the same age group as me). I have done that at a moment of weakness as love and sex was missing from my marriage.
Allah is a witness that it stopped at the kiss and no sex was involved as we mutually saw that it is unfair to my wife. The English lady said that she doesn't want to be involved with a married man and she would be interested if I separate from my wife and I couldn't cheat on my wife as I have been brought up with some moral values.
After few days I couldn't keep this to myself and spoke to my wife about it asking her to forgive me and to realise that I am human being and I have needs, but she confirmed that her problem is she can't help her sex drive and has gone forever. She was angry and felt betrayed which is what I expect.
Please brothers and sisters don't be judgemental and look beyond just the haram and halal and let me know your informed opinions.
Here are the facts
My wife can no longer satisfy me sexually
I have a high sex drive
I am a human not a saint (malak)
I have tried discussing my needs with my wife and she cries and gets upset before I get to the point then shouts and screams until I stop the discussion.
I can't marry another women as my finances allow me to support only one household not two
Suicide is the biggest sin
My body is burning with desire
Don't tell me to fast as I will be deprived of food and drink in addition to my permanent sex deprivation.
I get together with a lot of beautiful women in my job

Assalamalecum,the only solution is Quran,sir I m 24, I m a doctor, in hospital I come across many women n girls, sometimes they stare at me, but bcoz of fear of Allah I refrain from watching at them n needless conversations.the most important thing u accepted that u can't control ur desire, wrong is wrong, we in this world are given different qualities but the best one is one who live according to commandments of Allah, I say u shud read Quran and bring a change in ur lifestyle,u will develop fear of Allah n it will help u to improve, eg Allah in ch 24 v 30-31 that men shud guide their modesty n lower their gaze whenever they c a girl n bad thought comes, fear of Allah urges to differentiate between gud n bad (ch 8 v 29), sir yes v r human being we are bound to get arrogant, angry, indulging in things like adultery, theft but the only thing th8 can save us from this is Quran, so plz make a habit of reading Quran from nowonwards daily till ur last time bcoz u will b under guidance of Allah n in Sha Allah u will improve.Prophet Muhammad (pbuh) said the best jihad is jihad of nafs, so seek help from Allah by obeying him.moreover even after this there is no improvement then u had to either do second marriage, or give divorce to ur wife n then second marriage,bcoz Allah in ch 23 v 6 say sex between husband n wife only is acceptable to Allah.but I say change urself, if I can u can also do, by nature I m aggressive, arrogant n most probably I hv hi sex drive like u, plus colleagues n friends around me hv girlfrnds, do zina but still Alhamdulillah I m away from these things, only bcoz of help of Allah.

Walecum As Salaam, sir decreased libido, painful intercourse, problem reaching orgasm are signs of menopause, menopause marks the end of reproductive phase of a woman.fear Allah, Allah says in ch 2 v 223 of Quran treat ur woman as ur tilth.

Due to phone problems I couldn't write further, all those changes are due to cessation of ovarian functions which leads to hormonal changes.so try to understand Quran n change urself.