do holly and artemis kiss each other during book 1 to 6?i don`t know B i don`t read the orginal books.

Yes, they kissed in Time Paradox.

'Holly,' he said, when his vision cleared. His smile was sincere and grateful. 'You saved me again.'
holly was laughing and crying at the same time, tears spilling on to Artemis's chest.
'Of course I saved you,' she said. 'I couldn't do without you.' And because she was happy and flushed with magic
holly leaned down and kissed Artemis, magic sparking around the contact like tiny fireworks.

Then, Later...

He was instantly alert. holly had kissed him. Artemis back-pedalled, jumping to his feet, spreading his arms
wide to counteract the sudden dizziness.
'Eh, thanks,' he alisema awkwardly. 'That was unexpected.'
holly smiled, feeling a little embarrassed. 'Artemis, you're OK. Any zaidi healings and you'll be nothing but
scar tissue held together kwa magic thread.'