Im in the industry (photographer) and usually the ladies suggest sex instead of payment. can i go to jail now if i accept?
Yes.
For people like us, we have to show that we are working for them as any other professional. Therefore rates for escorts and mainstream clients must be the same and within the realm of reasonable. You will be considered to be exploiting them for sexual services. Even if they suggest the bartering.
Protect your ass and get paid in cash.
While that is true, people like us do that for family, close friends, etc. If the OP has no information other then escort name and hotel location, it is hard to prove that you are doing as a favor freebie to a friend.There's the nub, I'd say. If there was 'consideration' whether monetary or in kind, then there would be 'income', which must be reported and taxed. That's what makes the sex acts come under C36.
However, people—even professional photgraphers—do take pictures that others ask them to with no expectation of payment, and people—even prostitutes—do have sex without expectation of payment. If that's what happened, then clearly neither the CRA nor the Crown Prosecutor has any business with you.
Given the professions involved their burden of proof would seem somewhat easier than your task of reminding the judge/jury of the reasonable doubt and that you could be just good friends doing friendly favours. But it's interesting to consider if she was an actor and made the same offer, or if you always charged everyone, no exceptions, but not her because she was your wife. GF …?
Like almost all the hypotheticals, it can be read—and can go—either way until a definitive Court decision dictates the way such cases get decided from then on. Laws that criminalize ordinary matters such as these and yet can go either way are stupid and abominable. But they get votes.
Good luck.