<human>: Provide a brief overview of the text.

We met in grad school and she was perfect. Fun, a little dorky, and sexy. Stunning, really. Now I sit here, four years later, and I barely recognize her. At just over 5 feet tall, she went from a well-proportioned 130 to her present state where she's surely pushing 185.

Our sex life is nonexistent. The cute, bubbly redhead I once knew now does absolutely nothing for me. The opposite of nothing, really. It's a turn-off. I'm as fit as I ever was, if not more so. If anything, I'm in my prime in terms of fitness. Meanwhile, I open a desk drawer, candy wrappers. Night stand drawer, candy wrappers. Coffee table top, living room floor, candy wrappers. Snack wrappers all over the car. It's clear at this point it's only going to get worse.

I can't deal with that. I can't deal with the lack of intimacy, the disappointment, the oxygen tanks, the diabetes, the CPAP machines.

And yet, I feel bad. I know I'm going to break up with her soon. All the "I love you's" I thought I had said in earnest now count for nothing. I don't even know what to say. How to handle it. If I try to pull the vague "it's just not working out" thing, she's going to press me for answers. I'm really not sure if I should just come out and tell her why, if I should try to make something up that'll probably just end up sounding ridiculous anyway, if I should just not give a reason? I've never had to deal with anything like this before.
<bot>: Long-term gf got obese and I'm breaking up with her. Not sure how to handle it gracefully.