As amazing as it sounds, I haven't seen ... yet.
You may not believe me, but I've never tried ...
Would you believe, I've never been able to ...
You'll never believe this, but I've always liked ...
You'll find this hard to believe, but I've always been interested in ...
Believe it or not, I've had ...
You will find this hard to believe, but I've already ...
You may not believe this, but I've never been to ...
I know it's hard to believe, but I've seen ...
You won't believe this, but I've met ...
Believe it or not, I've woken up ...
This may sound unbelievable, but I've ridden ...
You may not believe this, but I've gone ...
I know it's hard to believe, but I've never ...
As amazing as it sounds, I've never made ...
This may seem hard to believe, but I've taken ...
Believe it or not, I've always been good at ...
You won't believe this, but I've worked ...
You may not believe this, but I've walked ...
You may not believe this, but I've ...
This may seem hard to believe, but I've been to ...
You won't believe this, but I've just ...
This may sound unbelievable, but I've ...
You'll never believe this, but I've visited ...
This may seem hard to believe, but I've taken part in ...
You may not believe me, but I haven't had ... since ...
Would you believe, I've never had ...
This may seem hard to believe, but I've never liked ...