Dear sweet lord. It shouldn't be that difficult for anyone to see that maybe it's a little gauche to aggressively hit on grieving people? In what world, universe, or reality was this dude even expecting with his tasteless, tactless passes at a person who's obviously going through so much? It's sufficiently creepy to have to accept that people like this exist, and what's worse is that they're not even all that uncommon. For some more jaw-dropping lowness, here are some women who dated toxic nice…