Help Boyfriend's Beagle is Driving me to Drink ;-)

I recently moved in with my boyfriend who owns a 6 year old beagle named Luna. I am not very experienced with dogs, and not the biggest fan of them either, but I have grown to care about her. Luna my boyfriend's ex wives' dog, but she was unable to take him. Luna in my opinion was not given any discipline. My boyfriend gives in to Luna's every need. When we eat Luna has been allowed to sit in front of us and grunt...I find myself speed eating because her staring and grunting while we eat is annoying. I cannot go into the kitchen without Luna getting anxious about food..at times she literally is spazzing about food being taken out. Each time we eat she does the same thing..scratches at the door, so she can be let out to pee so she can get a cookie. My boyfriend will jump up and let her out no matter how many times Luna scratches (even in the middle of the night). Luna is allowed to sleep in the bed and at her comfort level not ours. Luna is always on the couch between us or on top of my boyfriend..usually trying to lick. Luna excessively licks...not just a friendly lick on the face but nonstop slurping and licking, and my boyfriend is allowing it. I later found out that his ex would encourage this behavior. I feel like Luna is in constant need of attention and is getting on my nerves. I understand that I must learn to tolerate some things, but something tells me Luna has been running the show for far too long. I would like some input and also tips on how to teach an old dog new tricks ;-)