It strikes me that if you divorced after 31 years, there must have been a good reason and it may have been that the writing was on the cards for a long time so I don't think the relative short period since your decree absolute is of any importance whatsoever. You are lucky in my opinion to have a male friend, companion, call him what you like, who seems keen to develop a relationship with you so go ahead and enjoy your meal together - in the more intimate surroundings of your home you may find it blossoms. You are also lucky in that you are young enough to see time ahead of you for a second valuable relationship so grab the opportunity, and good luck.