What does a guy mean by toying with him?

I had my friend ask my crush's roommate if my crush likes me and the roommates response was well he just broke up with a girl from back home. It might help if she would stop toying with him. What does he mean by that? its been the opposite he's been toying with me. I absolutely thought he liked me! He likes hanging out with me and everything!
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ok so I went on a walk with him and we talked the entire time about life and pretty much everything. We got back to our apartments since he's my neighbor and he blushed and we both just stood there looking into each others eyes laughing...is that a good sign?
What does a guy mean by toying with him?
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