The first idea on the list is a sun and a moon. The sun represents light, day, warmth, and strength, as pointed out by Tattoo SEO, while the moon is all about darkness, night, and coolness. Despite their differences, both of these celestial bodies have an impact on the Earth and on life. They also balance each other out, just like friends do, as the union of opposites.

Once you decide on the theme of your tattoo, you can then get creative with the design. For instance, you could both get very small outline drawings of these objects. You could get big, full-color ones in the same place or opposing places (like the left shoulder and the right shoulder). You could each do a half of one and half of the other somewhere on your bodies, as well, allowing your body art to line up and go together even more.

On top of there being multiple ways to get a sun or moon inked on you, Tattoo SEO points out that the opposing symbols are always relevant. "This tattoo is timeless, and you should not have any concerns about this one going out of style," the website writes. It looks like this option it a win-win.