The Jake Paul retirement count is now up to 2 -- or at least 1.5 -- 'cause the YouTube superstar says he's "temporarily" leaving the sport to enjoy his hot girlfriend and shoot some guns until someone steps up to fight him.
24-year-old Paul -- who set his location on IG to "Dorado Beach East, Puerto Rico" -- says he's "on vacation until further notice" ... and posted pics getting mushy with Julia Rose, taking bubble baths, soaking in the pool and shooting at the gun range to prove it.
This ain't the first time the Problem Child has threatened to hang his gloves up -- remember, he claimed he was "retired" back in August after whooping Tyron Woodley in Cleveland.