What does it mean when a girl playfully kicks you in the crotch?

So my friend and I like each other. Today she came up from behind and began to tickle me, and then later she playfully kicked me in the crotch. A few weeks ago she was playfully talking about how she'd never have sex with me, but smiled after saying it to say she was joking. She kisses me a lot and hugs me too, and will be very physical. So what does it mean?
What does it mean when a girl playfully kicks you in the crotch?
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