Is this his way of flirting?

Is he jealous?
I'm confused.
So I've asked this question before but I got different answers and I want to read more opinions.

I have a guy friend and whenever he sees me texting or on my cellphone he jokes and teases me saying that I'm talking to men/ to my secret crushes. Could he be jealous or is this normal teasing among friends?

P. S. Also I've noticed lately that he has been a bit more touchy ( not sexually) with me and It kept me wondering what his intentions are
Is this his way of flirting?
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