If it is not okay for a person to do temporary marriage for enjoyment while having a healthy wife living with him who is pained by such an action by her husband, is the Mut'ah considered void or is it still valid?
Mut'ah marriage if it was done with all its conditions, remains valid till the end of its time or termination, but hurting his wife or family must be avoided. The Hadeeth says: Hurting the heart of a believer is more dangerous than destroying the Ka'ba into ruins.
Wassalam.