No love, no love, no love

After months of miserable poker playing (not even bad playing, just no luck) I finally started to get back in my groove in the second game; in fact I made it to heads up! I was down about 300 chips but slowly fighting my way back (700 chips total). I got my hand and looked: K-Q offsuit. Not a bad hand for heads up. I went all-in and got called - also a K-Q. This is good, right? We each just get our money back and continue to play? Nope. Flop comes out diamond-diamond-diamond. ARG! He has the K of diamonds. Turn, nothing. River: 2 of diamonds. Someone is still laughing at me but I'm happy just to finally win some money!