There was no agreement behind this gesture. No straightforward message of business trade or respect. True, there was some element of both in this situation, but that was not the purpose of the conversation. Minimus thinks that most people don't shake hands when it comes to personal matters...unless they do. He would not be surprised if this were a part of life that to which he was uneducated.

"Your aid has been appreciated," He responds. True, Megatron has been a reliable ally in the past months regardless of past behavior. He hasn't don't anything against the group, though as long as he remains in Vaikuntha, he has no method in which to attend his trial. There never arose an opportunity to abandon him. It's wishful thinking, Minimus reminds himself of this likely possibility that Megatron is being genuine. But it would be nice to have someone who has similar interests as he, who reads everything he writes, who takes everything seriously, who he thought trusted him...

Perhaps he's too easily lead astray by promises of his greatest desire. Tyrest offered fame and respect, and Minimus was prepared to erase his old identity in a matter of minutes. Megatron offers companionship, and this new realm of emotions and individual closeness is the greatest temptation.

"I- I look forward to partering with you in future missions." The temptation is too great. He grips Megatron's hand and refuses to look away from that still handshake.

He feels like something, he can't tell what, will be fine.