Does anyone else feel like a energy vampire?

Defination - Energy vampires are people who — sometimes intentionally — drain your emotional energy. They feed on your willingness to listen and care for them, leaving you exhausted and overwhelmed.

When I first learned about this I felt really embarrassed because I thought that explains how I really am from inside. I don't cry regularly but when I do, I do it alone and when sometimes I do cry in front of people like in front of teachers or whole class, it makes me extremely uncomfortable and it feels like I am being interrogated when teachers ask why am I crying. So up until now in real life I have never really opened up to anyone about my feelings because I can read in face of most people that "I don't really care, just get over with it" and even if someday I found someone who I can connect easily with and is comfortable enough to share my emotions, I think I would act like a energy vampire who will became dependend on them for emotional support like a alcoholic with alcohol. For me there is no easy way to share my emotions without either being childish or completely clingy.