By Libby Brodie I am at the age where the first wave of marital splits is hitting my peer group, my own separation included. These are not all sad affairs; in fact, I went to my first ever Divorce Party this summer and it was an unexpected hoot to drink “Gin & He’s Toxic” as we cracked up over ‘red-flag’ bingo and bashed a pinata filled with tiny bubble-wrapped bottles of vodka. However, it is rather wonderful to celebrate long lasting love and that ever-increasing anomaly of the 50th Wedding Anniversary of a happy couple, so I was delighted to be included in a surprise party for the parents o…