The answer
Pray for them, and try to convince them that through what they are doing, they will lose Christ. Also ask your priest to support you in this task, and give him their details.
H.G. Bishop Moussa
H.G. Bishop Moussa · Youth Concerns · 70
Faith Q&A › Youth Concerns › Social, Contemporary, and general issues
How can I stop someone from having a relationship with a non- Christian?
H.G. Bishop Moussa, Bishop of Youth, Youth Concerns (Questions & Answers). Compiled by Lisa Agaybi. Coptic Orthodox Patriarchate, Bishopric of Youth Bookstore.