Brian Austin Green is speaking out in response to an alleged custody claim by his ex, Vanessa Marcil. “I just heard that my ex was claiming I spent years taking her to court and asking for child support,” the 49-year-old actor wrote on Thursday via his Instagram Stories. «How was I the Respondent then??? #factsisfacts #thetruthshallsetyoufree.»The star included a screenshot of court papers that appeared to show Marcil, 53, listed as the petitioner and Green as the respondent.ET has reached out to Marcil for comment. The former couple shares a 20-year-old son, Kassius, from their four-year relationship.