"I need to text him. Wish him a happy birthday." The statement wasn't so much directed to anyone, but rather stated aloud so that perhaps he'd actually remember it. Billy was at least perceptive enough to notice that the SHIELD topic wasn't exactly discussion worthy.
He sat there, hands in his lap, weighing the pros and cons of various ways of approaching the subject of his relation to Wanda. Finally, he decided on brash and to the point, since everyone else seemed to be avoiding... something.