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