On his chest tattoo
For some reason, the tattoo on his chest is not very common, especially in comparison with other tattoos. This is surprising, in principle, because it is almost the chest, the ideal place for a tattoo because it is wide and has a fairly flat shape.
Furthermore, since the breast is located close to the heart,and the tattoos can be thematic, invest in them some special meaning. But, nevertheless, there is no specific for breast tattoos. Although in principle the solution in this case any tattoo. For example, you can draw a heart on his chest or crosses, and anything else, especially if put to a definite meaning.