You were caught off guard at first and initially worried about the consequences, but still felt the pangs of temptation hanging on ... until now you've convinced yourself "I'll just go along ... and there won't be any problem at all."
Because you've decided it's OK to ignore God, and made up your mind to sin.
Then the LORD said to Cain, "Why are you angry? Why is your face downcast? If you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must master it."
- Genesis 4:6-7