I know it can be seen as him obviously being the culprit, but he still should have taken into consideration that the others, who were with him, could've left that review too.
However, I guess it is true that he was the culprit now that I've read 23— Though, he's being a little vague about it.
Don't decide to love out of pity for not realizing it sooner, just go with who you like currently.
fr