AUSTIN A federal judge declined Friday to allow same-sex couples to immediately begin marrying in Texas. U.S. District Judge Orlando Garcia said allowing same-sex marriages “would only be temporary, with confusion and doubt to follow,” because the issue is being reviewed by a federal appeals court that will hear oral arguments on the matter next month. Garcia ruled 10 months ago that the Texas marriage ban violated the U.S. Constitution’s promise of equal treatment under the law, but Garcia also issued a stay halting his decision from taking effect while Attorney General Greg Abbott appealed.