Ruby acted out at Sam's Club and got let go.

Ruby, since you have trouble with boundaries:

A boundary is a limit to how comfortable that person is doing something. If you respect those boundaries, you understand what they are not comfortable with you doing and you don't do anything to make them uncomfortable. A good example would be with hugging. To respect someone's boundaries when it comes to hugging, it means to understand how comfortable they are with being hugged, and if you love to give hugs and they don't like hugs, you would be respecting that boundary by not expecting them to reciprocate and you not hugging them.

In your case Ruby, at work.... telling someone you will miss them while they are on vacation is crossing a professional boundary. You would say this to a friend, but not in a professional work environment. You confuse friendships with professional relationships. Things you would say to a friend you likely cannot be saying in a professional work environment. Terms of endearment are a no-no, and so is fixation on a specific superior or supervisor.

Boundaries CAN be learned. You have to respect people's comfort levels and pay attention to both body language and people's reactions to what you are saying to them.