Sex once a month is acceptable?
So here's the back story. I've been with my girlfriend for over a year and a half now and since the summer (2009), I'm lucky if we're having sex once a month and I'm getting fed up with it. For the first year we were having sex five times a week, easily. Sometimes doing it three or four times a day and then this summer it all just ended abruptly. It started going down to once a week, then every two weeks and now it's every month if I'm lucky.
For the past few weeks I've been trying to have sex and I've heard "Ooooh, you thought you were having sex tonight. DENIED!!!" Then she laughs like it's some big hysterical joke. I don't find it funny. Hell, sometimes before I go visit (I don't live with her), she'll tell me not to ask for sex because it's not happening. I'm tired of it.
So tonight, I decided to confront her about it. The first thing she said is why does it matter so much? I told her that sex isn't the most important thing in our relationship, but it is important to the point that it needs to happen more than once a month. She told me this verbatim: "once a month is good." I told her it's completely unacceptable and she told me to stop asking for it. I said to start having sex with me more than once a month and she said no. I told her if that's the case, I'm going to start looking for someone else.
Whew!
So two questions here:
(1) Should sex be happening more than once a month?
(2) Did I say the right things?