Ms. Sassy,
Things between my girlfriend and I have been sort of weird lately. We used to spend so much time together and talk on the phone at least a couple of times a week. Now I hardly ever see her and she never calls me anymore. The only time we go out is if I suggest it and the only time we talk is when I call her. We've been together for well over a year now. Do you think she's bored with me?
-Missing Her

Missing Her,
My heart goes out to you. Honestly, it sounds like something's going on but the situation may not be quite as dismal as you think. Yes, she very well could be bored with you, or she could just be tired of being the one who always puts forth the effort. So, she's putting the ball in your court and leaving it there.
The dynamic of most relationships consist of one person doing most of the work and the other person sitting back and enjoying the ride. I'm not saying that you don't put forth any effort, but prior to this your girl was probably the one always making the plans for the two of you. Well, news flash: that mess is tiring and time consuming. Now that you see what it actually takes to have a relationship that's not dysfunctional maybe you'll put forth more effort instead of making your SO do all the work, because at this point it looks like your relationship is going to sink or swim based on it. And right now it sounds like it's on life support. Take the initiative, consistently, to show her that you care and value what you to have and she's sure to be present, figuratively speaking, in the relationship again.