[It's everything he can give to Shockwave. Out of any part of a Cybertronian, the spark was the most important--the most cherished. It's your soul and your lifeline combined, and to show someone that is considered to be the utmost in trust.

Shockwave had earned that long ago. Now, it lay before him, open and free of guilt. He'd saved Shockwave, and was trusting the other bot with his life now. Without fear, he watches as Shockwave's fingers loop through the tendrils of energy, closing his eyes as he feels it to the core of his being.

Even just the emanating energy had such an affect on him, enough for that engine to purr slightly.]

And you were mine.

[His head leans forward, touching against the others' again.]

I hoped I'd see you again. You were what kept me fighting.

[His hand gestures up, towards his spark.]

This spark is still glowing because of you. And for that...I hope you accept it.