Working in pairs at work wasn't something new, but, working with the most intelligent and hardworking co-worker was.. something new and different for you

As you we're explaining your part; you somehow strayed from the topic to another, you ended talking about penguins; then Atsushi says

"If we both we're a penguins, i will give you the best stone i could find, i will take years or centuries to find the perfect stone for someone as perfect as you.."

Is he flirting?