By Tom Bryant Sometimes it’s a song or even the smell of something delicious wafting from the kitchen that suddenly reminds Andre Portasio of his husband Paul O’Grady. At other times, the stark reality of the star’s absence is right there in front of his eyes. “Just before he died, Paul started painting pictures of lavender on the ceiling of our guest cottage,” Andre explains. “He painted one side but to this day, the other side is still unfinished.” He adds: “It makes me sad but at the same time gives me great comfort knowing that I shared my life with him.” Andre takes solace too in his dete…