Even though there was lots of mixed signals today it looked like that in the end JB will be together and Meera will back away because in the end Meera does give Bani back her mangalsutra saying that it is always with u it never left u.
Yes, Bani does fix Meera's mangalsutra and told Meera that it will not break again which symbolized that Jai and Meera's marriage will not break but backing away does not mean breaking. Meera backing away and giving Jai to Bani again might be like the movie Judaai with Anil Kapoor, Sridevi, and Urmila where in the end Urmila backed away and left giving Anil Kapoor back to SriDevi