ANSWER:

These things can happen even after getting married while they were very good before marriage. 

The parents should investigate to the best of their ability and leave the rest to Allah and have firm belief in Him.

Want to know,there’s some cases that came to my knowledge that a girl get to know her husband is not straight (means he’s homosexual) after marriage now they’re in messedup relatnship, in such case before marriage how a girl sure that her partner doesn’t have any sexual/mental problems,how a girls side talk to the other family to sure such sensitive topics?

Fiqh of Marriage | November 18, 2020 9:36 am
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If either of my parents instruct me to divorce my wife without a valid reason do I follow their instruction and do as they say in order to please them as I was told that I have to obey the parents except when they are asking me to commit shirk.