SHAFAQNA – The Grand Ayatollah Sistani answered questions regarding how to behave during engagement period.
Question: Can a girl who is engaged with someone for a period, call off the engagement or not?
The Grand Ayatollah Sistani: If there is no marriage contract, she is free to do so.
Question: Is it allowed to talk to fiancé?
The Grand Ayatollah Sistani: There is no problem if modesty is observed in looking and speaking, and it is safe from committing sin. But joking and entering into non-ethical and romantic sayings are Haram, but all of these are Halal after religiously conducted marriage.
Source: PERSIAN SHAFAQNA