uninvite B letting her know how INAPPROPRIATE it is for you, a married man, to go with another woman to a party when you are fighting for your wife, AND you don't want to lead her on.
This is it in a nutshell. You can't tell B that you are fighting for you M and want your W when you are starting down the EA path with her. Lets just put it out there, your relationship with B is teetering on the brink of an EA. Take it or leave it, but thats how I see it. I know you are feeling lonely and want someone to pay attention to you and make you feel good about yourself, but you are playing a dangerous game and you're gonna get burned. Just my opinion, but how is this helping you further your goals with W?
M:39 H:39 K:S14;D8 T:22yr M:15yrs S:12/28/07 EA/PA 3/14/08 OW preg 11/17/08 born 12/12/08 his ~~~~~~~ Never allow someone to be your priority while allowing yourself to be their option