How can a girl overcome her attachment to her fiancé over the phone, which has led to transgressions, and what is the way to patience and averting sins and God's wrath until the wedding?

Satan entices humans and beautifies sins for them. He swore to mislead and astray the Children of Adam. Allah has warned us against him and commanded us to take him as an enemy. What the questioner finds in her heart, of attachment to her fiancé and eagerness to meet him, is a fruit of Satan's temptations. Therefore, one must cease such behavior and repent sincerely, and the fiancé must also repent. Beginnings must be corrected by abandoning what is unlawful and by expediting the marriage; for the fiancé is a stranger to the woman until the legal contract is concluded.