Is having emotional intimacy cheating?

In general, I believe yes, if it is with someone of the opposite sex. Please consider what type of relationship you want, and how you want to be treated. Becoming emotionally close to someone of the opposite sex may be okay if it's possible to do without any physical attraction. However, I think this is really difficult if that person is not a relative. I can attest from personal experience that this can lead to temptation, and heartbreak.

Also, I think you already know the answer to this question. Please remember that you alone are responsible for your choices and they will lead to consequences.