Best Call and Worst Beat Ever. In the Same Hand

After winning my last tournament, I decided to play in a cash game last night. We started with four players and I started out pretty strong. I was making good calls and getting good cards, and was soon up $40. I was feeling pretty good as more and more players showed up. We maxed out at 12 players at the table. As the night went along, I was still playing well, but my hand quality was going down. I was hitting fewer big hands, so I started playing more defensively. I hit more big pots when I had the cards and around midnight, I was up to $240+/-.. No kidding. I was feeling GREAT about myself. I was playing really tight because some of the bets were getting out of control. I was playing with some guys with some serious cash and some of the bets were getting up to $70+ range. Now, I don't nomally do that. I can't afford it. Then is happened. Throughout the night, I noticed that Bennie (one of the players) was making big bets at odd times when he didn't hit his hand. It was only when there was already a lot of money in the pot. Basically, he was trying to buy pots. I noticed this on several occasions. Anyway, I was dealt 8-6 of spades. not a great hand, but this was one of the rare occasions that the opening bets were below $5, so I played them. Two spades came up on the flop, giving me four spades towards the flush (5 cards of all one suit). The turn card was another spade, so I had a flush. It was a low flush though. Remember that I only had 8-6 of spades. Two higher spades would beat me. Anyway, I bet big. Maybe $10 (big for me, but not for the table last night). Bennie goes all in, which turned out to be another $73. YIKES!!! Now, remember, I was plus $220 for the night, so I was thinking about this. I would still have alot of money if I called and lost. Remembering his tendancy to make a big bet with nothing, I called Bennie. AND I WAS RIGHT!!!! He had a jack of spades and a six of clubs. I was dominating him with only one card left to come up. The only thing that could beat me was if another spade came up, giving him a higher flush (jack high vs 8 high). there were literally seven cards that he could hit to win. Seven. Anyone want to guess what came up? A MOTHER F*#&ING SPADE!!!!! After that hand, I was crushed. I should have left with my $100+, but wanted to hang out more. I didn't win another hand for the rest of the night. I left with more money than I went with, but having $74 at the end of the night feels alot different than leaving with $300+. I guess I souldn't be too angry about it. I made a great call, but just got unlucky. AAAARRRRGGGGHHHHHHHHH!!!!!!!!!