Why can't non-christians talk with god?

[Esquilax]

My friend tells me I shouldn't lust after women and it's a sin. I want to stop, but how do you turn off being attracted to hot females?

You can't; it's an automatic process in your brain, and another one of those insidious and awful guilt tactics christianity loves so much. You're being made to feel guilty for a function of your flesh, and there's no need for it.