Lust is adultery of the heart

see Matthew 5:27-30

“Dear fellow Christians, make a decision to pray this as often as you need to.

-I will not disobey God by lusting or sinning.
-I will not disappoint God by lusting or sinning.
-I will not waste precious time on lust, porn, or sin.
-I die to self daily, and I surrender all to Jesus.
-Yes to Jesus, no to porn and lust!"

-Johnson and Pearl

Matthew 5:27-30 New King James Version
Adultery in the Heart

27 “You have heard that it was said [a]to those of old, ‘You shall not commit adultery.’
28 But I say to you that whoever looks at a woman to lust for her has already committed adultery with her in his heart.
29 If your right eye causes you to [b]sin, pluck it out and cast it from you; for it is more profitable for you that one of your members perish, than for your whole body to be cast into hell.

30 And if your right hand causes you to sin, cut it off and cast it from you; for it is more profitable for you that one of your members perish, than for your whole body to be cast into hell.