My best friends is a female born on August 30th and I am born on April 19th. Compatible? She says she has sexual dreams about me and life path dreams about us. What does this all mean?

You have to get to know someone and spend time with them to know if you're compatible.  That's the only way to know for sure.

I wasn't sure what the term "life path" referred to.

When I searched for that term, the first link was to Life Path Systems which in the business of "Providing care for individuals with mental illnesses."

The next link explained what you were referring to, I assume: "The Life Path is the most important number in your numerology chart and is derived from your date of birth."

The only thing I can really infer about meaning, however, is that she is probably interested in you sexually.

Barb's answer. Peace

Barb is 100% correct.

Birth dates don't matter.
Astrology signs don't matter.
Dreams don't matter.