Why does Paul has a tattoo?

I think as he कहा in his interview, his tattoo is probably for his own personal reasons.

i think the reason why Paul has a tattoo so he can empress his प्रशंसकों with his new personality

From what he told us at the Convention I went to, when he was younger he got a tattoo on his shoulder and then when he got a bit older he regretted it and didn't like it any more. So he went to a Japanese Tattoo artist to see if he could alter and make it into something he'd be happy to keep on him the rest of his life and hence the rose :')
His older tattoo can be seen in some of the clips of him in भेड़िया Lake!

He might of got it for his wife Torrey. It's a good reason for him to have it.