The videos are very interesting. Not going to definitively say that they prove she may be lying, but from being in too many relationships in the past to discuss, Those video look like they are quite cozy together, they sure don't look like a man and woman who didn't have a non sexual (consensual) relationship. They remind me of several of my past relationships, even with some of my exes, there was a flirtatious behavior when we hung out, more than flirting, but who needs to hear details. Those videos remind me of familiar situations I've been in, in the past.
Lets just say, women who are JUST my friends or acquaintances, aren't posting videos while sitting on my lap, or sitting on my bed half naked, it's usually a different kind friendship.