Nikaah & Marriage Issues

Forced mahr

Q: My question is about Mahar. Please tell me about the forced Mahar. I heard in an Islamic channel about forced mahar a caller call mufti and he said that he did a nikah but in nikah his in-laws and girl's uncle forced him and his family to write 200,000 Pakistan Rupees in Mahar but the boy did not agree to accept that huge mahar amount from his heart. Due to some family reason's he accepted. So he Asked Mufti that now who will pay the Mahar since I am not able to pay it. The mufti replied in this scenario you were willing to marry that girl but you don't agree with Mahar from your heart and the In-law's or any person forced you to accept it and due to family reason's you accepted that Mahar, so now you are not responsible to pay the Mahar nor your family. Now the person or person's who forced you to accept that mahar will pay your Mahar to your wife. Please tell me, is that Mufti's opinion right or wrong and please also provide me a hadith as a reference with Translation in Urdu or English. 

Communicating freely before nikaah

Q: I have found a pious partner الحمد لله, Shukr for the duah Mufti it has proven effective. This lady with whom I am happy to be married. I have already proposed and she has said yes... الله أكبر Now, What am I to do Mufti? I surely have to spend some time with her to get to know her ... (going out with her and maybe having lunch with her?) I have noted this as she has grown fond of me during the little time I have spent with her. How should I go about acquainting myself with her so we can get to know one another better? Within a legal framework.

Marrying a shia

Q: I am a sunni girl Alhamdulillah. Fortunately or unfortunately I like a shiaa boy. For a long time I was unaware about the major differences between shiaa sunni. Now when I have come to know I am confused ....very confused. We both have already committed to each other about getting married. Now Sir ... I want your help. Can you please tell me is it not halal for a sunni to marry a shiaa? And what is the reason if it is haraam? After all Shiaa's do also believe in Allah and read the same kalima. Awaiting your answer.

Obeying one's parents

Q: I like this boy and he likes me.We are ready to get married however my parents disapprove because we are of different casts. I do not want to go
against my parents but are they allowed to do this according to Islam? They have not met him  or his family. What is the best way to deal with the
situation and what can I read?