Victor is a character that wants to use “impressing” to express his feelings toward Theresa.
For example during french class, “Mr. Bueller asked if anyone knew French. Victor raised his hand, wanting to impress Theresa. The teacher beamed and said, “Tres bien. Parlez vous francais?”.
Here he raises his hand for a second probably only dreaming about how impressed Theresa’s going to be, not thinking about what the consequence would be. In this case feeling shameful, embarrassed, and scared.
I think that thinking only about what you’re going to do without thinking about the result is a bad habit because sometimes, just one word or action can change the entire situation, like maybe one word can get you fired from your job or maybe because of one action you’ll get grounded, there’s a lot of things that can happen because of something not done or said properly. These are just a few examples of what might happen if you don’t think about your doings.
Finally, from the entire story, I think that Victor is a person who only thinks about the action he’s going to perform not thinking about what might happen after the action is done, because when it’s done, it’s done, and you can’t change it.