@saruuu & f.s.n the thing is when adi was small one day avantika found out about a paper...it was abortion papaer and signed by harish...avantika right out asked harish about it..but harish didnt gave her any replya dn wa all quit... and in SBS it was shown avatika saw a woman with harish outside metrnity hospital... and then that day she left harish with 8year old adi...now the thing is harish didnt said and non elders or anyone in family bothered to find out why harish and avatika suddenly seprtated and decided to stay alone... so it came out on mehandi say...so after it in yest. episode we saw nana finally confronting avantika...and avantika clearly stated even being quit ke its preeti harish ahd an affair with to nana...when nana forced her to tell who she know about it and does she has any proof and do she know the woman...and she clearly stated yes she knows woman very welll...and in past preeti clearly in one episode said it was harish at one point of her life when no own was there to guide her to do what and to not do...he stood and guide her and became her mentor and became a figure of ideal in her life...so this was the incident when she got pregeee and as she was too small herself and child would be illigtimate child so harish helped in signing papaer and set on with abortion...
now with preetin is as her father never gave her time and avantika already in harish home and we all knwo how mami was so preeti was all alone and she always wanted her father attantion and she never got and in processs she becaem stuborn and all...and might have fallen in wrong man hand who said will amrry and all...or soem thign like this(you can give all sort of guess) and then they spend time and she got pregee and then man must have shook his hands of preeti and his kid and now what to do so finally harish helps and saves her and he didnt mention ever i think coz he wanteed to save evryone from the pain and hurt they might feel... when knows what preeti ahs doneee...