Bradley Cooper is a loner.

The 'Hangover Part III' star enjoys his own company and often vacations alone, claiming he uses his free time to wander around a new city and reflect on his life away from the film set.

He told Swiss newspaper Le Matin: ''When I was a kid, I hated being alone. Everything changed when my career took off. I recently spent an entire week alone in Paris.

''I would sleep until midday and then wander around the city centre all afternoon. I took motorbike rides alone at night until 2am when the streets were empty. It allowed me to reflect on my life.''

The handsome star - who lives with his mother, Gloria - hopes he can experience the joy of raising a child had and says his biggest wish is to have a family of his own.

Bradley, 38, said: ''I hope I'll have that gift in life. I would love to be a father because I know how happy and proud my dad was about me.

''He passed away recently and having a father was his greatest joy. I hope it will be the next natural step in my journey as a man.''