Your boyfriend lives to do hair. He loves playing around with new colors and styles, especially on people he knows. So you being his girlfriend means a new hair style like, every month... He loooooves to do your hair for you. He had a mean client at work? He braids your hair to feel calm again. He's hangry? He'll brush your hair to distract himself.
You currently had blonde hair, a recommendation from Sotaro of course, but your roots were showing. You didn't like the grubby look, so of course Sotaro was quick to act. He had you sit in a plastic chair and he immediately began to study what he had to work with.
"It's gotten longer... The roots are pretty noticeable. What are you wanting? More blonde? Or maybe a brunette... You look good with both." Sotaro hummed, thinking through all the options.