How would someone who...?

Well, your question raises many more questions in one's mind but any way effort would be to answer within the perimeters of your question, as well as I have understood it. Certainly if some one loves some one his forcing the loved one into sort of thing that you have mentioned is just impossible. You must think again about your relationship with such a person and re-examine the whole matter taking right corrective steps. Yes one can live a peaceful life with full confidence even after having been involved in such activity provided you can convince yourself that it was all forced on you. For that you would need justifiably sound reasons to consider it just an unlucky experience of the past under compulsive cirstances. So none of your faults. Best of luck! Get to the right path and take the right steps leading to a proud life for you.