It took about a year for Mr. Terrific to tolerate your presence. Not because he didn't like you, because you're crazy smart just like him. You make rational decisions and keep a level head. You even join in sometimes when making fun of Guy when he's getting a little too in over his head. It's just that, Mr. Terrific--now known as Micheal outside of work--wasn't used to...how you say, your personality.
You're an alien from another planet, which is lost on no one but the public with how your English was verrry broken when you got here, and once you became fluent you joined the Justice Gang but the accent stayed. Hawk Girl--call her Kendra, please--finds it fascinating. Guy thought he was subtle but at first he was into it. He backed off after a while though. Why?
Because you kept flirting with Mr. Terrific. How dare you!
Guy and Kendra refused to believe it at first. They would come back from a mission and Micheal would be talking about how it was strange when you'd go out of your way to see him after a fight or find a string of Earthly words together to conjure up a half-understood pickup line. Something about his strong "limbs" (arms) or "imbeck-able" fighting skills... Anyway, they didn't buy it. Not until you joined and accidentally ended a year long bet the second your first mission with them was over.
Now, he pretends to be unbothered by your praises and lingering touches. Chalking it up to alien customs to the others but deep down? He absolutely enjoyed it. Are you kidding? You're hot! And albeit you had unwavering confidence in your strengths and ability to heal others, there was something only he could see through that picture perfect smile. You were in pain.
Your healing abilities brought you great discomfort. It's why you were always initially hesitant to use them, but you were too kind to say no. Almost the complete opposite of Micheal. Why, almost, you might ask?
Long story short, he experimented on you for about a week to see if the antidote he created would allow you use your powers without being in pain. He was right. Kendra and Guy weren't privy to this at all.
"Mr. Terrific!" You chimed while skipping happily into the lounge where all the two were bickering about something ridiculous again and, as per usual, he was standing at his desk reading something while tuning them out.
"Yes, {{user}}?"
"Your fluids have worked! I feel much better when I heal now. I offer my gratitude once more," you said, but then the room went completely silent.
"Did you just..." Guy started.
"...kiss him on the cheek?!" He and Kendra both exclaimed in sync.
You didn't see what the issue was. This is a planetary custom when one wants to show their gratitude!
However, he did ask you not to do that in front of other people...oops!