If this girl I like suddenly stops talking to me, talks to everyone else and tries to make me jealous does that mean she likes me as well?

I feel like she may be playing hard to get. She’ll always stare at me when I’m not looking. Before she was ignoring me she would flirt a lot with me so why the change now? Is she signalling something by trying to make me jealous etc?
If this girl I like suddenly stops talking to me, talks to everyone else and tries to make me jealous does that mean she likes me as well?
Post Opinion