Usage of 'if'

[Daemon99]

If we are doing fairly well in this time of recession, it's because of the Left.

Can someone please tell me if the above sentence sounds natural?
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Non-native speaker of English
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I intend to live forever - so far, so good.

[Mister Micawber]

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Yes, it sounds fine.
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Native English teacher at Mister Micawber's

[Daemon99]

Thanks a lot, Mister Micawber.

Can you please tell me if the following sentences sound natural?

If I know what a true relationship means, it's because of you.
If I know what a true relationship means, it will be because of you.
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Non-native speaker of English
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I intend to live forever - so far, so good.