Never in Taylor Swift’s “Wildest Dreams” did she think ex-boyfriend Joe Alwyn would gab about their romance in an interview. However, the actor, 33, felt like he “should set the record straight” since the Grammy winner is able to reflect on their relationship in her songs. “He had a good run with Taylor, but they’ve both moved on, and he has no desire to rehash their past,” the insider told a magazine. “He spoke up because not every song that mentions London or alludes to an ex is about him, which is why he said something.” The insider is referring to Alwyn’s anecdote in The Sunday Times, wher…