Usage of 'if'

English as a Second Language English Vocabulary, Grammar and Idioms
1

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?

2

.
Yes, it sounds fine.

3

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.