No, don't close it, just don't turn it into in-fighting.
They have split. I don't know why or if anyone else does. The obvious implication from what MG wrote on his blog is infidelity on her part. Although, at least one of Jenny's friends seems to be strongly defending her, so who knows. But the time-frame appears to have been in March.
It seemed sudden from the outside, but we don't know what really went on in their relationship.
Obviously there are a lot of questions: where are some of the dogs, where did she go, who's this other guy, is there even another guy, etc. We may never get answers to those questions.