Our expert says:
Fantasizing, while it remains strictly within your head, though many people consider it to be cheating, it probably not so. Just as fantasizing about taking a machine-gun to the noisty neighbours is not quite the same as mass murder.
Its not clear what you mean by cybersex - it it means you enjoying porn on the web, that's also not quite cheating ( though it lies on the same path ) ; if it proceeds to explicitly sexual chat-rooms and so on, that's further down the path.
Its also not clear from your message, but it sounds as though the other person, the colleague, is not aware of this or part of it ?
It sounds as though the jury's verdict is Cheating.
TO me, what matters much more, is that you are for whatever reason not getting what you want out of your current relationship, and are seeking more in this currently unreal dabbling. What is needed is either to revise the current relationship, involving your partner there, with the assistance of couples counselling, so it is again mutually satisfying ; or if this relationship seems hardly worth all that effort, end it, and move on - but not to involve someone else in a current committed relationship.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.