Can you live without love?

My friend that tried to end his life yesterday said he has no one to love him so he decided to try to take himself out of the game. He lost his parents and a sister in a car accident when he was a teenager. He was in a relationship with a woman that treated him like crap and then had several affairs while they were together. At this point, he’s kind of hanging out there all by himself. Could you stand a life with no one to love you? No one to cover your back, help when things go bad? What are your thoughts?