Son in law looking at his mother in law with lust

Salaam.
We pray you are well. Please forgive for the disgust in the following questions.

1)If a son in law looks at his mother in law with lust/sexual temptation, does his nikaah with his own wife break?

2) If a son in law finds his mother in law attractive and with lust/sexual temptation looks at the shape of her body or breasts or looks at the upper part of her breasts when she bends over. does his nikaah with his own wife break?

3) If a son in law thinks and fantasies of having sexual intercourse with his mother in law and imagines her naked. does his nikaah with his own wife break?

Shukran