I don't know about these things but I would hope not. I thought he was a really cute guy in Silver Linings Playbook. I don't like anything (that I know or have read) about Gaga. So you see, my opinion has very little value.
I have no reason to know that, and more importantly, I don't care. I just never have. I know many people find fulfillment in watching celebrities live; I'm just not one of them.
Reminds me of Garth and Trisha. They swore nothing was going on too. It wouldn't surprise me if they were already dating and just wanted to keep a low profile.