Cheatin' Heart

I have to tell you something, and I don't know how to say it.
I'm just going to come right out and say it.
I've been cheating.
Over my lunch break, on the way home from work, even over dinner, if I can get away with it.
Yes, it's with my ex.
I tried to realign my loyalties, but I can't fool myself anymore--or you. It's just not fair.
Sure, things were going great for a while, but when the pressure is on, and we get down to the basics--the nitty, gritty details--my needs and desires, on a molecular level, you just don't cut it. I need something better, more Real. I really think I deserve it, too. You deserve to be with someone who isn't longing for another.
I know this is hard, but you'll find someone--soon. Someone better, who cares about you and loves you for who you are.
It's not you. Really. It's me.
I will always hold a special place for you in my heard, Diet Coke, but it's time we parted ways. Please don't cry. I'll keep you in the fridge for my diet-drinking friends, but I have to be true to myself, and I'm just not happy with you. I feel like I can't be me.
I'll miss you, but I've got to stick with the Real Thing--I'm a Classic kind of girl, you know?