Jennifer Garner politely declined ex-husband Ben Affleck’s offer to portray his love interest in his new movie, “Animals.” “Jen was like, ‘Great, but no, I’m not gonna play your wife in a movie,'” Affleck, 54, shared while appearing as a guest on “Jimmy Kimmel Live!” Thursday night. “[It’s] probably for the best. That lesson has been learned,” he joked, as Kimmel, 58, and the audience laughed. Affleck and Garner — who met on the set of 2001’s “Pearl Harbor” — famously played love interests in the 2003 Marvel film “Daredevil.” He portrayed the titular character, while she played Elektra Natchios. Affleck explained on the late-night show…