Some people, after having sex, will rationalize their actions by blaming the other person. Maybe not to the extent of saying, "It's all his or her fault," but more subtly in the mind.
If you have engaged in sex outside of marriage, perhaps you have had thoughts such as these:
* I truly would not have done that if the decision had been wholly mine to make.
* I felt like I had no choice at that point.
* He (or she) wore me down insisting that we should, and I got tired of worrying about it.
Number one: the decision is wholly yours. Number two: you always have a choice. Number three: the stress you feel when the other person insists you have sex will be much greater if you give in. Plus, if the other person thinks sex is an option right now, then you need to think carefully if this is the kind of person you need or want in your life.
"Blessed is the man who perseveres under trial, because when he has stood the test, he will receive the crown of life that God has promised to those who love him. When tempted, no one should say, 'God is tempting me.' For God . . . does [not] tempt anyone; but each one is tempted when, by his own evil desire, he is dragged away and enticed. Then, after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death" (James 1:12-15).