I am dreading V-Day as well. Do you have any single friends or someone in your family that you could out with on Monday?
If it was upto me, I'd go out with a friend for dinner and movie or something - leave my cell phone at home and just have a fun night otherwise you'll be sitting at home feeling like crap. No point in doing that.
For me I want to be there for my babies, so I am going to plan a nice dinner and I'm stopping on the way home to pick up some little gifts to give them (some candy or chocolate and probably a V-Day style craft).
They'll appreciate it, and it will allow me to remove the focus from my W. I also assume it will make her feel good to see me being thoughtful to the kids - and if not, oh well no concern here.
I think for your H's birthday, a simple text. Just saying, "Happy Birthday" with no "!" or ":)" or anything extra, just simple or just mail/give him a very simple card with no extra ILY's or anything in it.
Good luck!
BITS SIC
Me - 34 W - 33 M - 8 years T - 15 years D7, D5, D2 Bomb Nov 10/2010 "I'm not happy and INILWY" W Staying for the kids Mar 13/2011