Rape case against Facebook friend

http://timesofindia.indiatimes.com/city/delhi/DU-student-files-rape-case-against-Facebook-friend/articleshow/20685084.cms

How can one engage in se*x without having full trust and just mere promise of marriage. If people want se*x, then should have unconditional sex*. Or else have it after marriage. Blaming on partners is silly and childish thing.