Here is a video of this great song,

Oh What A Reason - Mike Purkey * Published on Mar 23, 2013
https://www.youtube.com/watch?v=pU3swCVZ32E
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Dan Brown Youtube channel
https://www.youtube.com/user/danshepherd55/videos

So sorry, the title to this song is "Oh What A Reason"

not sure but is this what your looking for?

He's The Only Reason

Verse: 1
I've been blessed with so many things God's been good to me,
I have family and friends to share in all I do,
but if I lose it all and I am left with nothing
if I have the Lord I know I'll make it through.

Chorus:
He's the only reason I live and oh what a reason,
he's the only reason I live and oh what a reason,
there's nothing in this world that's worth living for,
it'll only leave you empty and longing for more,
he's the only reason I live and oh what a reason.

Verse: 2
Now you may have tried allot of things, in search for real happiness,
but if you've looked very long you know it can't be found,
oh no but if you find the Lord in the power of his spirit,
he'll be your reason to live and he'll never let you down.

I have a friend that is looking for this song called You give me all the reasons why..Not forsure if that's the name and I don't know who sings it