Well short of slipping some happy pills into his drinks then he needs to talk to someone who is professionally trained to deal with his depression. Many of us on this site dealt with depression after our Tx ended and some were able to do it alone and some benefited from some feel good pills to improve their mood and get them over the "hump" so to speak. You may try to leave him a strongly but nicely worded note expressing your frustration and concern. I wish you luck.

David

Age 58 at Dx, HPV16+ SCC, Stage IV BOT+2 nodes, non smoker, casual drinker, exercise nut, Cisplatin x 3 & concurrent IMRT x 35,(70 Gy), no surgery, no Peg, Tx at Moffitt over Aug 06. Jun 07, back to riding my bike 100 miles a wk. Now doing 12 Spin classes and 60 outdoor miles per wk. Nov 13 completed Hilly Century ride for Cancer, 104 miles, 1st Place in my age group. Apr 2014 & 15, Spun for 9 straight hrs to raise $$ for YMCA's Livestrong Program. Certified Spin Instructor Jun 2014.