Haraam relationship

Q: I am a girl but I have a friend who is a guy. I recently started practicing Islam. I told him to practice the same. I am happy that he did. Now I learnt that the interaction with non-mehrams should be avoided. I told him about it but I am afraid that he will move to the wrong path because I am really important to him. What should I do? I can’t abandon him because he will move to the wrong path. And I can’t stay because it’s not allowed. 

Secret nikaah

Q: A girl I know has done a nikaah with her boss. She did not have her guardian present and there was no written documents. They had a supposed molvi reading the nikaah and two witnesses. It was all verbal. Does the nikaah stand?

Making a secret nikaah after committing zina

Q: I have been in a relationship with a boy for the past year and it resulted in us both committing a disgraceful act and has resulted in a child. We have repented and asked for taubah and want the baby to be legitimate in the eyes of Allah by performing nikaah. The problem is with my mother, she does not agree to this and says I am too young and also she is not religiously inclined when it comes to marriage in Islam. She says that I am 17 and cannot do this without her consent. I was wondering if there are any ways to make nikaah secretly until we can do it openly. My first priortity is my child and I want to do this properly and the boy and his family agree to this.

Selling apps on playstore

Q: I previously purchased a playstore account with 7 more girls in university. Now I am starting my own android app business so I will buy my own separate playstore account as my intention is to sell features of my urdu learning app. There is some different process to put the app on the playstore for sale. So I want to make a separate test app to test the process of selling.

My question is, can I do this testing on the previously purchased playstore account which is owned by the 7 girls from university and myself. I will only do the testing for the selling process with the permission of the 7 other girls. If yes, do I need to share my profit with those 7 girls when I will be selling my app later on?

Note: I will not put my selling app on this account which is owned by the 7 other girls. I will only test the selling process. 

Giving zakaat for previous years

Q: My father saves enough money and my mother has jewellery. I know the nisaab for savings, gold and silver. As per the criteria, Zakat is wajib on my parents. Till now, in their entire life they didn't pay zakat. They did toubah (repented) for not paying it. Now how do they pay zakah for all the previous years because they don't know when they became sahib-e-nisaab.

Also determining the savings of my father for all the previous years is quit complicated. How much should they start giving from this year?

Accepting the proposal of a boy who is already engaged

Q: A boy wants to marry me and he is already engaged. He proposed to me even before his engagement, but there were problems from my side so I responded with a NO. Now he is not happy with his engagement and is having understanding issues with his fiance and wants to get engaged to me. He has good character and is really interested and now I feel the same. He wants to break his engagement in a proper way without degrading his fiance or her family. I want to ask if it is Ok for me to accept the proposal and let him do what he wants or will it be a injustice to that girl?