A short answer to this question is No because neither of them has specifically explained wh they were splitting about a year ago.
However, the long posts they have written ever since do explain some things about how things work.
Firstly, whenever a celebrity couple splits, the first thing public does is assume that one of them might be cheating.
Looking at her Instagram posts, Jen wrote that this decision has affected her a lot, and it has shocked her and made her grief-stricken, and broken-hearted, marking her exact words.
Well, her words do indicate that Brandon might have cheated but there is no clarity to this accusation at all.
Also, Brandon had written about this case but he removed it and has uploaded it regarding the matter just a few hours before writing this article.
There, Brandon has said that he has been going through a lot for the last 5 years and the last 14 months have been even worse.
He said that he and Jen have made a legacy and it cannot be undone. Also, he said that it is difficult for both of them, but they have to move on.
Many think that Brandon had not cheated on her, looking at this statement, but nothing can be clearly said.
