Imamate (Divinely Appointed Leadership) is a very high position, and it is only Allah who can decide who is qualified for it. And if the Prophet Muhammad (S) announced to the people that the Twelve Imams are the leaders, or that the Ahlul Bayt are the people that we must refer to, or in that Imam Ali is his successor, it was only because he was asked...
Islam does not forbid any sort of good and respectful relationship between the people...
Twenty traditions from Imam Ja'far al-Sadiq (as)
I stand witness that there is no god except Allah, He is One and there is no partner ...
One who has faith in Allah Abstains from Corruption: Such a man abstains from treache...