He is 100% wrong for lying to chicks and leading them on. But he made a thread asking about the morality of it, he didn't come in here to brag.
Most people in here told him it was a shit thing to do, and the guy said he agreed and would stop lying.
What else do you want him to do after admitting he was wrong and saying he wont' continue down that path?
As far as sleeping with another woman goes after a recent death...look, I have never been in that situation, and I would guess that most in this thread haven't either. There are certainly better AND worse ways of dealing with grief. And it would be much more troubling if OP immediately got into a new relationship.
Casual sex is defintiely not something I would recommend--but it doesn't mean you didn't care about the deceased. I can have sex with a person and not care about them--it can be completely for just physical pleasure--or it could be used as a way to feel some sort of intimacy after a lover dies.
Again, not an emotionally healthy thing to do, imo. But it isn't the heartless act that some of you are making it out to be either