Here's the MA statute:

malegislature.gov/Laws/GeneralLaws/PartIV/TitleI/Chapter272/Section53A

(Again, intentionally not linked.)

They use the phrase "sexual conduct" (for a fee). But of course we ask: what defines "sexual conduct"?

There is a case cited in my info Commonweatlth vs. Lavigne (1997) for which details are found here:

masslawyersweekly.com/fulltext-opinions/1990/01/01/commonwealth-v-lavigne/

In it is the phrase "manipulation of genitals". It then goes on to say, "Such an act is unquestionably sexual conduct violative of § 53A when offered or requested for a fee."

So, I would infer that in the very least CBT could be construed as prostitution.

Of course, because so many people conflate eroticism and sex, anything of an erotic nature could violate this statute. And MA is hardly the one, or one of the few, who use vague language.

I have heard various mumblings about Boston, in particular, but I honestly don't know what, if any, specific things apply to the municipality of Boston or the real issue is MA in general.