they can decide to wait for all things, then they won't need rented house. If their mind alone wait, bodies can't they can get married using special marriages Act, which process takes about a month time.
However, there is nothing wrong in doing it legally.
why is the fear or they paying money already to some blackmailing PC. get hold of a bold advocate and take action. what agreement is done for marriage. it has witnesses to say they are married.
Live-in relationship is not fully accepted in society. so hosue owner, neighbours will have peer pressure. issue is not social acceptance. police intervention.
Why not your friend stop thinking of meeting for some time and get on with studies? it is most important if they want a good future.
an affidavit or agreement may not help a prostitution case. If police wants to foist that case, they can. why give chances by meeting like this.
if two adults want to have s*x there is no problem - SC ruling. but how does anyone distinguish it from prostitution. prostitution for 1 night, few nights and this for many nights. if they want to convince parents let them now. else if they want to wait, really wait.
after all s*x is hardly 1% of life. sleep is 35% and job/study is 33%. so why lose sleep for s*x.
immorality has nothing to do with police. there is no illegality
you can't run life like this fearing for what may be called immoral or illegal pervertedly continuously.