There has been no official confirmation of any sort. It's true that they haven't been seen together since March/April, and that Richard deleted all Jenna-related posts from his Instagram. But no one from their agencies has officially confirmed anything. Nor am I surprised about it. They always kept their relationship and personal lives otherwise close to their chests, so I wouldn't be surprised if they broke up and never made an announcement of it. But as I said, no one "knows"!
I also have a pertanyaan in a relation to this, is Lily still dating Matt? I know that they're filming Pride and Prejudice and Zombies, but they keep denying it.