Dear [Recipient's Name], I hope this letter finds you well. I am writing to formally request the cancellation of our engagement that was scheduled to take place on [date] at [venue/location]. Please accept my sincerest apologies for any inconvenience this may cause. Due to unforeseen circumstances, it has become necessary for me to cancel our engagement. It is with a heavy heart that I make this decision, as I was genuinely looking forward to joining hands with you and celebrating this special occasion. However, circumstances beyond my control have made it impossible for me to proceed with the engagement. I understand that this cancellation may cause some hassle and disappointment for you as well as for our families. I want to assure you that I have carefully considered all alternative options before arriving at this decision, and I believe it is in the best interest of both parties involved. To express my regret for the cancellation, I would like to discuss the possibility of rescheduling our engagement in the near future, once the current obstacles have been resolved. This would be a wonderful opportunity to make up for the disappointment caused and allow us to celebrate our love and commitment properly. I kindly request you to understand my situation and accept my apology wholeheartedly. I am more than willing to bear any financial costs associated with this cancellation, including any non-refundable deposits or fees. Please let me know the details of any such expenses so that I may promptly reimburse you. In conclusion, I deeply regret having to cancel our engagement and I sincerely apologize for any inconvenience this may have caused you. I hope you can find understanding in this unfortunate situation, and I remain hopeful that we can find a way to reschedule and make this special occasion happen in the future. Thank you for your understanding, cooperation, and support. Should you have any questions or require any further information, please do not hesitate to contact me at [phone number] or [email address]. With heartfelt apologies, [Your Name]