Should i text this guy?

I work in a mall, this cute guy comes in that also works in the mall and i feel like we flirt a a little. He said he doesnt come in my store if he doesnt see me, all of my co workers think he flirts with me but im pretty insecure and im not sure...i have his number cuz i knew him before we worked in the mall but we never talked until then, should i text him? What would I text him? Or should i say something in person when he comes in? Im scared of being rejected lol