For the Male of Today:
Social loneliness is brought on by a lack of social network. Everyone needs people for “hanging out.”
The first step, then, to curing loneliness will be to rebuild or develop a social network.
Men seek out “buddies” that fulfill their needs for social contacts–the guys at work, a tennis partner, possibly a drinking buddy or two.
Men also seek female friends for a social network. Men have told me women friends are less competitive, more compassionate, and better listeners than their male buddies.
In addition, it is quite socially acceptable for men to go places alone so men who do not have a social network can build one quickly if they choose to do so.
Social loneliness is usually not as prevalent in men as in women unless a man is dealing with extreme shyness or other unusual circumstances beyond the scope of one article.