It's obvious that Gwen Stefani adores her boyfriend Blake Shelton however when she visited The Tonight Show with Jimmy Fallon on Wednesday she had a confession to make, she might have found the deal breaker for their relationship! Gwen took Blake to Disneyland for the first time and as a lover of roller coasters she was devastated when Blake who is 6ft 5'' couldn't fit into the majority of the rides. "That was literally, like, that was almost a deal breaker for me," Gwen admits.