aries men are loners?

My aries friend calls himself a lonewolf.He works all the time and says he likes to be alone.Even when he's in a relationship and he likes a girl,he'd rather spend time on his own then with his gf.Do most aries men like to be on their own?Why would an aries guy rather spend time on his own then with a girl he likes?

Aries are like this generally.

As far as relationships go, I dunno. Sure, we're content by ourselves, but when there's an S.O. involved, I know I like to spend time with them.