You repeatedly use the phrase "I know" and yet you came here to ask questions.

What you received was far from a "slam".

What you have is a wild animal that tolerates you. You are applying human characteristics to the animal and believing it now has accepted you in some way. MANY animals can interact with humans easily. I have had caiman and many snakes through that people claimed "puppy tame" and I would NEVER dream of turning my back on them. Why? Because they are all wild creatures that follow instincts and nature. Because of the instincts and nature stuff like this and sometimes worse, happens.

If your rat is in an aquarium you need to rethink that you are giving it the best possible conditions because you are not. Wire cages are MUCH MUCH better for rodents than any tank ever will be. Breeders use racks because they are better than tanks AND they are much easier on the breeder.

If you want help and answers, many people including myself will be happy to help you out. But you must accept the truth. The rat is a wild animal and you will make mistakes that many of us have already made ourselves.