Wa `alaykum as-Salamu wa Rahmatullahi wa Barakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
If the brother knew that she was going to marry another guy while she is married to him, then the marriage is not valid. In Islam, a woman cannot be married to two men at the same time.
The excuse that she has no choice but to do it cannot make any difference. It is not different than someone saying: I need to commit adultery to get my status in the country or rob a bank to give charity, etc.
The marriage is fake; so, it is null and void in Islam.
Allah Almighty knows best.
DISCLAIMER
Views expressed by hosts/guests on this program (live dialogue, Facebook sessions, etc.) are their own and their appearance on the program does not imply an endorsement of them or any entity they represent.
Views expressed by hosts/guests on this program (live dialogue, Facebook sessions, etc.) are their own and their appearance on the program does not imply an endorsement of them or any entity they represent.