Various masaail of Nikaah

Q: Is there any limit in loving one's husband? Me and my husband are trying our best to abide by the rules of Shar'iah, we remind each other about ahkaamat of Allah taala. So alhmdulillah our relationship is filled with love. So we want to express our love for each other. So can I say to my husband I love you more than anything / you are my everything/ you are my world/my heart is perfect because you are inside /my day and night is filled with your thoughts and so on? Will it be like I am telling I love him more than Allah and his messenger? But in my heart it is not like that, even though I love my husband intensely, Alhmdulillah I love Allah and his Rasul (Sallallahu Alayhi Wasallam) and I don't agree with anyone where ahkamat of shariah will be broken if I do so, be it my beloved husband.

Q: Please inform me the law in the hanafi mazhab if news regarding the demise of one's husband was received and after iddah, the widow got married to another man but after some years the first husband comes back. Which nikaah will be valid? With the first husband or the second husband? The woman has one child from the first husband and two children from the second husband?

Q: If I marry a Muslim male who skips namaaz, will my nikaah with him become invalid?

Q: My spouse uttered words of kufr. She renewed her Imaan by reciting one or both kalimas, i.e. she may have recited first Kalima only or second Kalima only or both of them. I cannot now recall. She also recited Imaan-e-Mujmal and Imaan-e-mufassal and made tauba. Nikah was then re-performed. Is the Nikah valid even though she may have recited only one of the two kalimas? I do suffer from very bad waswasa regarding these matters, so please bear this in mind when answering.

Q: Is it permissible for the husband and wife to live in separate homes because the wife can't live with the conditions and complications of brother in-law and his wife?

Q: Does it say anywhere in Qur'an or Hadith that it is ok for a man to keep his wife with their parents and his brother? From my understanding he needs to give full ownership (meaning like the keys of the house showing full trust) of house to his wife and if he affords he should keep his wife in a separate place not in same with his brothers and parents.

Q: I want to asks how does Islam guide us about Married life. Up to what age should a child be kept with father/mother in their private room. As children grow, spouses feel problems in their private life. Please guide me according to Islamic teachings.

Q: Is it permissible in Islam to remain unmarried for a girl? I mean I am twenty two years old. I don't want to do nikaah to anyone. I want to live my life without marriage and also being in the ibaadat of Allah Ta'ala till my last breath. According to Islam, is it permissible?

Q: Is it compulsory on the wife to seek her husband's permission before leaving the home if she wishes to go to her father's home? 

Q: I want to ask what is the Islamic ruling when few families stay in one house. Is it prohibited in Islam? Please guide me in detail. I am married and I have my little brother with my father and mother. We are living together. How should purda be observed among the non-mahrams of the home?