How To Write A Closure Letter To Your Ex Boyfriend . For your sake, i won’t say your name. It was wrong of me to lose my temper like that.”. FREE 5+ Sample ThankYou Letter to my Boyfriend in MS Word PDF from www.sampletemplates.com Whenever you feel up to it, i would like to see you again to apologize in person.”. I hope you are doing okay. I’m sending you this because i have a special feeling for you, although we are not together.