I understand that one can talk to their fiancé provided there are no lustful intentions. Is this correct? If so, is saying words such as 'I love you' allowed?
Bismillah,
Asalamu Alaykom,
You may say this if you are both mahram to each other. Being Halal to each other is established by reading the nikah or a mutah formula with the correct conditions. After this, sharing affectionate words is permitted.
May Allah grant you success