Zināʾ (زِنَاء) or zina (زِنًى or زِنًا) is an Islamic legal term referring to unlawful sexual intercourse.
You must be alerted and very careful from such person whom you think her a friend. If you want to continue your friendship with her, you must be clear and frank with her that she Must stop major sins. If she listens to you and leave committing major sins then you can cont8nue talking to her with being alert, but if insists on committing major sins, you Must leave her and stop dealing with her completely. Such bad friend can ruin you if you continue with her. Millions of people like you were ruined by such bad friends. It for you to decide to save yourself by leaving such bad friend, or ignoring the risk on you from her and continuing friendship with her, but you will definitely repent and feel very sad in the future.
Bad friend is a window to disastrous future and we must be brave enough to keep them away from our life before it is too late.
When you feel the urge or desire to commit such major sin, go to your kitchen and fire a flame and try to keep your hands near the flame and see how much you can tolerate being near the flame. Think seriously that committing major sin leads to hellfire which is much more painful and burning than your kitchen fire.
Are you ready to follow a desire which leads you to hellfire that you can never tolerate for even a second?
Accountability is determined by the exercise their own free will and understanding of what they are doing. So for example a 4 year old child hitting another child or stealing is wrong but does the child fully understand yet- the implications of their actions. Are they held accountable in the eyes of Allah swt- the answer is no. This is also because their aql and rational/intellectual faculty is not yet developed fully.
Hence those suffering with serious mental illness in which their aql is severely affected such as severe bi-polar or severe mood disorders, or forms of schizophrenia my have entire breaks from reality, they may for example even think "they are the president of the United States" and actually believe it. These are cases in which such a person is not rational whatsoever and hence would most likely not be held accountable by Allah. Otherwise we are expected to control ourselves and not attribute excuses to simply being "crimes of passion" whereas we are expected to control our passions/impulses and not be controlled by them as human beings that is what distinguishes us from other creatures on this Earth.
wa Allahu al-'Alim,
And Allah is all knowing,
You can reassure your new Muslim friend that Allah swt is all merciful and all forgiving. Any actions performed during their time as a non Muslim will be forgiven inshallah and when they utter the testimony of faith it will be as if they are newly born with no sins.
May Allah grant you success
Masturbation is a major sin and its punishment has been mentioned in many Hadeeths, that the sinner will come in the Day of Judgement with his hand which he used in masturbation, swollen like a mountain and will bedridden in front of all human beings.
Zina ( fornication) is another major sin, which is different from masturbation.
Allah The Glorious knows all our deeds and we need to seek Forgiveness from Him.
You do not need to mention your previous sins to any one except Allah, simply, because no one can forgive your sins but Allah (SWT).
In many cases, mentioning your previous sins can hurt the feeling of your spouse or displease them. Disclosing your previous sins can be harmful as it is possible that it can leak to others including your children when your spouse is unhappy with you. That is why, you should keep your sins between you and your Creator and seek His forgiveness.
Just repeat Estighfaar as many times as you can and seek from Allah (SWT) to forgive your sins and protect you and your family from every harm ijn this life and hereafter.
Islamic rules have punishment on certain major sins, but that punishments can only be implemented by the Prophet , Infallible Imam or his deputy.
It is not allowed and could be considered a metaphorical sort of zina or a pathway to zina; for instance, a hadith says that unlawfully gazing at a non-mahram is a sort of zina of the eye.
However the actual law of zina which involves legal consequences refers to the conventional act of coupling through which procreation occurs.
Anyway, if you are are still in contact with this person and you aren't married to other people, it is good to sort your situation in one way or another to avoid a possibilitly of the formal type of zina.
Thoughts in and of themselves are not sins. But they however can easily lead to sin. The idea of thought control is very important in Islam and it begins with being attuned to our ideas and the images , sounds, and casual mixed gender interactions that effect our heart-whether it be in real life or online/social media.
For example if someone was to see an image that was sexually exciting that can lead him or her to have certain thoughts or imaginations of for example committing adultery or obsessing over another man or woman which in could effect harmony of the marriage. We should pay close attention to our daily salaat, give in charity, read Qur'an/Du'a, and try our level best to control our glances. Also and perhaps most importantly, beseech Allah in du'a swt for his divine assistance ins seeking refuge from Shaytan and Satanic whispers while attempting to root out the causes of impure thoughts as mentioned in the question. Thus it requires a deeper investigation into the self to understand what triggers such ideas.
wa Allahu al-'Alim
Zina ( fornication) is one of the most dangerous major sins mentioned in Quran and Hadeeths .
Repenting it needs:
1. Real feeling of sadness and sorrow for committing this major sin.
2. Establishing firm decision not to commit it again under any circumstance.
3. repeating Estighfaar ( seeking forgiveness) day and night especially when you are alone and during Sojood ( prostration).
Any kind of sexual interaction with a non-mahram is prohibited, Islamically immoral, and a major sin. There is what we call Zina of the limbs, where one commits Zina with their eyes, by unlawful looking, or Zina by their hands, by unlawful touching, and so on.
May Allah ta'ala protects us all from such.
That being said, jurisprudentially the technical meaning of "Zina" is unlawful sexual intercourse.
And Allah knows best.