A woman wasn't happy about the fact her boyfriend broke the rules of their relationship that they had agreed upon and that he kept denying having broken said rules. So she exposed him to the world of Twitter for everyone to see.
It probably went a little too far, but at least it seems like his searches are pretty tame considering what's out there. The tweets were deleted but you can see screenshots here and here (NSFW language).
It seems the issue is not so much the fact that the boyfriend is doing the searching/presumably watching or the porn, it's the fact that she doesn't fell comfortable in the relationship that he's doing it after he said he would not.