I think you should do an honest gut check. see if you really think your husband is coming back, if so, then I wouldn't date. but if you honestly feel your husband is jerking your chain, then i'd say go for it. I'm not a big fan of blowing long stretches of time withering in pain while the WAS is out living a coors light commercial.
our time here isn't guaranteed. so if your husband isn't seriously, then don't waste your life.