My roommate has been pretty down ever since he has “gotten over” his situationship. How can I make him feel better and bring life to his eyes again.

My roommate has been pretty down ever since he has "gotten over" his situationship. How can I make him feel better and bring life to his eyes again.
My roommate has been pretty down ever since he has “gotten over” his situationship. How can I make him feel better and bring life to his eyes again.