Lonerphobia is the fear of being alone, or being without another person in close proximity. In other words, fear of being a loner.
The term "lonerphobia" is a milder, unscientific description of the more acute term "monophobia".
In most cases, lonerphobics can be identified with their unwillingness to go anywhere alone without at least one other person in accompaniment. They are often refered to as "clingy" people.
"Jane is so lonerphobic, she needs a friend to go to the toilet with her." --> it is evident that Jane is a sufferer of lonerphobia.
A fear of when you are stalking someone's Facebook profile, and Accidently liking and commenting on that's person picture. This phobia is present in 85% of all straight males under the age of 25 on Facebook