Oh man, you have a LOT of room to improve on that diet!
You will be amazed what happens when you start eating right. It's tough - but worth it. I'm getting back into it myself.
You need to split your meals up into 5-6 per day. This keeps your metabolism running and your energy levels up.
Your brain takes about half an hour to figure out that your stomach is full, so eating "until you can't eat anymore" is bad, mmmmk? You're really stuffing yourself, and there isn't a point to that.
Eat smaller meals, spread them out, and that alone will help.
You also need to plan how many calories per day you need to consume, and where they come from - protein, fat, and carbs. Most people suggest 1 gm of protein per pound of body weight - but I tend to like the 1 gm per pound of lean body mass better.
There's a lot of different opinions on this, you just have to find out what works for you.
You probably have a pretty high metabolism, so if you start eating right and keep up the cardio, your "6 pack" should start showing up.