Welcome to Plathville‘s Isaac Plath is officially back with his ex Kaylynn Brinkley. “Always been you,” the reality TV star, 20, captioned a Sunday, August 30, joint Instagram carousel that shared romantic glimpses from a couples’ shoot with Brinkley. The photos, captured in an idyllic field at sunset, showed the exes embracing each other in a series of poses including Isaac spinning his girlfriend around by the hand. Isaac, whose breakup with Brinkley was documented in the April 14 episode of the TLC reality series, also tagged her in the post. Welcome to Plathville, which...