[Sadrain]

Yes, jealousy is an emotion that sometimes accompanies love and friendship. It is the wish to be the only closest being to that other person, wish to be the very best for them, and fears that other beings who come close to their beloved/friend will take him/her away.
Basically, Fur-ball is afraid you will forget it and not give it enough attention and it won't be important to you anymore, while Ashurato wishes Fur-ball, who has been with you for longer, so might be more important to you, wasn't here.

Though, I think that you at least partially knew it was so. C:

And indeed, squishy parts are much less durable as your metal body.

I am glad you're having fun, but maybe you should sit down and have some glass of cooling liquid, if that is possible. xD