I think love is communication. Not because you never disagree, but because you care enough to talk about what isn't working instead letting resentment quietly grow. I think love is being able to say, "This hurt me," and feeling safe enough to say it.
"His power level is over 9000? That's nothing, Gohan. When you grow up, you're gonna learn big numbers aren't everything."
"But—"
"Just listen: I have to blow into a little tube when I start my car."
"Okay."
"It's called an Ignition Interlock Device. Court ordered. It detects my blood alcohol concentration level."
"Uh huh.
"And if it's over 0.08%, I can't drive."
"Wow."
"Zero point zero eight, Gohan. That's all it takes to get a DWI. Remember that."
"Okay."
"Zero point zero eight."
"Zero point zero eight."
"And then it won't matter what your power level is because you won't be able to drive 6 blocks down to the nearest ABC liquor on a Friday night, and get yourself a little treat for being such a great coach."
"Huh."
"It's a travesty, Gohan!"
"A travesty."
"And I'm living it. I'm living the travesty."
"Coach, if you don't mind me asking—"
"Hm?"
"Couldn't you just walk?"
[pft] "Walk."
"It's only six blocks..."
"What's the furtherest you've ever walked, Gohan?"
"Well—"
"Cause I'll tell you right now: you get an apartment on the wrong side of town, you're gonna learn some blocks are longer than others."
"—actually, everyone in my family can fly."
"Really?"
"Really."
"Huh. That must be very convenient for you."
"Coach, can I ask another question?"
"Shoot."
"Why's it called a DWI?"
"Nobody knows, Gohan. They used to call it a DUI, but they changed it."
"..."
"And no one knows why."