Can I ask a woman I'm seeing if the sex is better with me than her dead husband?
Why would you ask her that?
I always wondered about it and she is a single lady
Bringing up the intimate life of your widowed lover could be quite painful for her just to try to stroke your ego. How will you feel if she says he was better? Or if she gets very upset?
I just want to know the truth.
I can understand wanting to know the truth, but this is a sensitive issue and it would be rude to bring it up. She might still be suffering in the loss of her husband. You should be more respectful and just enjoy the time together.