Sadhguru
Why does ugliness creep into a marriage after some time?
Why marriages turn ugly
Ugliness starts when, after some time, you think the other person needs you and you start acting wantonly. Remember that you are together to fulfil your needs, and conduct the marriage responsibly and joyfully.
If you always remember that you are with this person to fulfil your needs, you will conduct the relationship responsibly. At first you are like that, but after some time you think the other needs you, and then you start acting recklessly.