Answer: mashnote

AnswerCrossword Clue
MASHNOTELovey-dovey letter
MASHNOTEBit of steamy prose
MASHNOTEBillet-doux
MASHNOTEEffusive love letter
MASHNOTEIt might be signed with tic-tac-toe symbols
MASHNOTELove letter
MASHNOTEItem in fan mail.
MASHNOTEIt might end "xoxoxo"
MASHNOTESteady correspondence