How To Text Shy Guy?

We talk for 3 weeks now and in 3 weeks he only text me first ONCE and he said he would text me for often if he's not this shy.
I'm always the one who start conversation and when he reply like he just reply not asking me something back. But he flirt with me sometimes though. Like he told me he wants to cuddle a few times but not like "I want to cuddle with you" but like "I want someone to cuddle with"
what should I do? Or how should I text him so it's not boring?
How To Text Shy Guy?
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