Re: is cybersex the same as cheating?
Hell yea, its cheating.
I might even define it as worse than a physical affair because its creating an emotional bond first, then meeting a physical need. A physical affair could be a one off that is just to satisfy an urge (still wrong). The cyber thing is a thought process and carefully planned out action.
As to you being prudish. Only you can decide where you are comfortable and what is appropriate. Changing because he cheated is crap. He will just move the goal post and tell you that he wants more and your not delivering, so he's getting it online again.Guilt is never a motivation to give.
If he wants to experiment, then it's on him to earn the trust, take the lead, respect your boundaries, and be completely honest with you and himself. He failed at every one of those points.
The first question should always be, "If it's that bad, why are you still there?
OK, you screwed up, it happens. Now apologize. But apologize just once. Make it loud, clear, short, to the point, and directly to those you trespassed against. Then move on.