Ex boyfriend contact after 30 years?

i dated someone for 2 months 30 years ago an now he wrote me a letter apologizing for not treating me too great. and to see how I was doing w e then talked briefly on phone he's married so he told me he would call me from his work phone next day. he never did. what is the purpose of all this. if he's happily married why say all this to me. ?
Ex boyfriend contact after 30 years?
Post Opinion