Is it permissible to communicate with one's fiancée by phone, and what is the ruling on joking with her? Are verbal expressions indicating fear or jealousy permissible? Is it better to expedite the marriage contract or delay it until the wedding? And what is the ruling on messaging her on Facebook or posting pictures that include supplications or roses?

One must be cautious when dealing with a fiancée because she is a non-mahram. Frequent conversations or communications are not permissible except out of necessity. It is forbidden to sit with her in seclusion, to be overly familiar and laugh, or to send emotional hints. As for messages of reminder and supplication, they are permissible, but it is best to close the doors to temptation. Waking her for prayer is good, but not directly through you. Hastening the marriage contract while delaying cohabitation, or keeping the matter at the engagement stage until marriage, depends on what is beneficial after consulting trustworthy individuals and performing الاستخارة (prayer for guidance).