I didn't.
I've had cause to check someone before (not someone I was dating) and work in a safeguarding role so I'm not oblivious but I'd known him for several years as a friend and wouldn't have dated him if I'd felt the need to check.
He asked me outright a couple of weeks ago if I had (we were discussing the case which brought about Claire's Law). I was a bit surprised by the question, tbh.
And he seemed quite surprised that I hadn't but accepted that I wouldn't have dated him if I'd thought I had any reason specifically to do so. He'd assumed I just would have done given the level of violence against women and children.
I just wondered if it was something many women did really.