30 years old and boy crazy?

A close friend of mine is completely boy crazy! If we were teenagers that would be fine but we're 30 years old. I swear that she is constantly switching from one guy to another that she thinks is cute and has a crush on. I love her to death but it's quite annoying to hear about the latest and greatest crush she has. She wants the real thing but with how she is I don't see it happening when everyone is your crush.
Any advice on how to nicely and respectably tell her that her boy craziness is a little over the top? I of course hope that one day she meets someone nice and settles down but in the meantime have a new crush every other month is too much to keep up with.
30 years old and boy crazy?
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