Imagine you being in the lab with Tony and Bruce. Tony keeps flirting with you and it pisses Bruce off. You giggle at one of Tonys jokes and kiss his cheek. Bruce looses it and starts smashing things. You run in front of him and he stops, then slowly turns back. When he's back to Bruce he looks away in shame and you turn his face, so he's looking at you, and kiss him on the lips. You ran out of the lab giggling, leaving two stunned men inside.
