You and wheeljack were partners. You did missions together, faught together, and basically just everything together. The fact was, your personalities were different. Wheeljack was sarcastic, always trying to make things fun, kind of a show off and you were focused, always wanting to get stuff done quicker and just the opposite if your partner.

While fighting decepticons, wheeljack got injured while making sure you saw how he performed

“I did not.. mean for that to happen.”

He chuckled.