Generally, girls with tattoos (girls here) are more social and lack some innocence and naivety.
Boys mature slowly at first, so at the same age, not to mention girls with tattoos, they mature later than ordinary girls. This makes him feel timid and not confident enough to handle these things for a girl with a tattoo, unless the boy is also very mature and sociable.
It's not that I don't like it, I just don't know how to start.