OPTION QUESTIONS! NEED HELP ASAP

[Ryan Mertz]

OK, I AM NOT ASHAMED TO SAY THAT IM NEW TO REAL ESTATE INVESTING. I HAVE DONT NUMEROUS REMODELING JOBS FOR INVESTORS BUT NEVER INVESTED IN PROPERTY MYSELF. I WAS SEARCHING FOR A HOME WHEN I CAME ACROSS A NICE DEAL. I THEN FOUND BIGGERPOCKET.COM AND NOTICED THAT THERE IS A OPTION CONTRACT THAT I STARTED BECOMING VERY INTERESTED IN. THIS SOUNDS LIKE SOMETHING THAT MAY WORK IN CERTAIN SITUATIONS AND DEALS.

MY QUESTION IS .
IF I GET INTO A OPTION CONTRACT WITH SECONDARY OFFER CANCELLATION RIGHT OF 1ST REFUSAL CLAUSE WITH A SELLER (OPTIONOR) AND I NOW HAVE A SIGNED CONTRACT AND INTEREST IN THE PROPERTY WHAT IF HE WERE TO TELL ME THAT HE FOUND A BUYER WITH A OFFER BETTER THAN MY OFFER SO THAT HE DOESNT HAVE TO FULFILL THE CONTRACT WITH ME.

EXAMPLE . I HAVE A $50,000 HOUSE OPTION WITH SELLER HE CLAIMS TO FIND HIS OWN BUYER FOR $60,000 AND TELLS ME SO NOW OUR CONTRACT IS CANCELED. HE REALLY DECIDED TO KEEP THE PROPERTY BECAUSE HE FOUND GOOD TENANTS AND WANTED TO CONTINUE TO RENTING INSTEAD OF DUMPING HIS PROPERTY.
***I WANT TO KNOW WHAT I CAN DO IN THIS SITUATION TO BACK MYSELF UP SO THAT IM NOT WASTEING MY TIME OR MY INVESTORS TIME AND MONEY!!
I WANT TO BE A NICE GUY AND LOOK OUT FOR THE SELLER SO THAT IF HE IS TRULY ABLE TO GET MORE MONEY FROM A BUYER HE CAN. BUT ALSO DONT WANT HIM TO 2ND GUESS THE CONTRACT AND USE THE "I FOUND ANOTHER BUYER WHOS OFFERING MORE"