Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh

 

In Islam, it is permissible to take a second wife without divorce from first one. The first wife herself at that moment has the right to say I cannot tolerate to be with another woman and can ask for divorce. So the man has to make a choice, would he take a new wife with a chance of losing the first one?

Only if you are living in countries or States that prohibit second marriages that you need to think of legal consequences of that matter.

 

Almighty Allah knows best.