public function link_post( $target_post_id, $subject_post_id ) {
		$linked_posts      = false;
		$target_post_type  = get_post_type( $target_post_id );
		$subject_post_type = get_post_type( $subject_post_id );

		if (
			Tribe__Events__Main::POSTTYPE !== $target_post_type
			&& Tribe__Events__Main::POSTTYPE === $subject_post_type
		) {
			// swap the post IDs and post types around so we are assigning in the correct direction
			$temp_post_id    = $target_post_id;
			$target_post_id  = $subject_post_id;
			$subject_post_id = $temp_post_id;

			$temp_post_type    = $target_post_type;
			$target_post_type  = $subject_post_type;
			$subject_post_type = $temp_post_type;
		}

		if ( ! $this->is_linked_post_type( $subject_post_type ) ) {
			return $linked_posts;
		}

		$subject_meta_key  = $this->get_meta_key( $subject_post_type );
		$target_link_posts = get_post_meta( $target_post_id, $subject_meta_key );

		// if the subject isn't in the target's linked posts, add it
		if ( ! in_array( $subject_post_id, $target_link_posts ) ) {
			// if multiples are not allowed, make sure we remove all linked posts of that type before we
			// link the new one
			if ( ! $this->allow_multiple( $subject_post_type ) ) {
				foreach ( $target_link_posts as $attached_post ) {
					$this->unlink_post( $target_post_id, $attached_post );
				}
			}

			// add the subject to the target
			$linked_posts = add_metadata( 'post', $target_post_id, $subject_meta_key, $subject_post_id );
		}

		if ( $linked_posts ) {
			/**
			 * Fired after two posts have been linked
			 *
			 * @param int Post ID of post to add linked post to
			 * @param int Post ID of post to add as a linked post to the target
			 */
			do_action( 'tribe_events_link_post', $target_post_id, $subject_post_id );
		}

		return $linked_posts;
	}