Three Cheers for Bill! None for you!

I decided to follow Bill today, as Morgan was out with that fat bitch Janelle. After hiding my car behind the corner, I pulled out when I saw Bill's car leave with what appeared to be a young girl in the passenger seat. I knew it! He was cheating on Morgan! Wait, why would I say that, as if THEY were dating? Morgan was MY girlfriend.

At first I thought Bill had just picked up one of the local high school hotties. After all, all the girls in town had heard the rumors about his big dick, and they were constantly swarming around him. I didn't think he went that young, but I wouldn't put it past him.

She could have passed for a real high school cheerleader easily. Her face and skin looked young and fresh, and her endless legs were distracting enough you weren't inclined to wonder too much about her age. You were more interested in other numbers, like her measurements. The skimpy red, white, and blue outfit she was wearing added to the effect. She made me feel very patriotic: my cock wanted to salute her when she passed by me.

Like most guys in the mall, I turned around to get a better look at her ass twitching under her short skirt when she walked by me. I had started to turn back when something familiar made me look again. That was when I realized it was Morgan.

And that was when I saw Bill's hand on her ass. He was groping my girlfriend right in public!

It made me feel mad and jealous, but it also made my cock twitch, which was embarrassing. Here I was getting hard from watching that notorious asshole feel up my girlfriend! I began following from a safe distance, telling myself I wanted to find out what was going on, but secretly I was craving to see how far they were going to carry this.

It turned out I wasn't the only one watching, or the only one who thought Morgan was in high school. An old lady was giving Bill a dirty look, thinking he was robbing the cradle. Meanwhile high school boys were eyeing Morgan and looking at Bill enviously. I was sure they would've hit on her if he hadn't been there. Instead one of them just complimented him, "Way to go, dude!" Morgan rolled her eyes and swatted Bill's hand away as he held up her skirt so they could all see his property.

It got worse as I followed them up an escalator. Bill had taken a cellphone out and was getting "upskirt" pictures of Morgan. Her panties were so skimpy they only served to accentuate the tight curves of her sexy ass. I wondered who else Bill was showing my girlfriend's ass to on his mobile phone.

I could see Morgan's display was making Bill excited. When Bill got excited, it was hard to conceal. I could see the tent sticking up in his pants when he groped her now. I wondered how many inches of that had been in my girlfriend's body, and how loud it made her moan compared to me.

They disappeared into a lingerie and heels store. For a while, from my vantage point on a bench across from the store, I could see Morgan trying on different sexy shoes while she flirted with Bill and the clerk waited on her like a queen. Then after a while Bill came back with some skimpy lingerie, and they disappeared towards the changing rooms. After about 15 minutes I got jealous enough I snuck in to spy on them.

I went back towards the changing area and began to hear moans. As I got closer I could hear sloppy sounds, grunts from Bill, and moans from Morgan. I went into the booth next to them and listened as I jerked off, faster and faster.

I was just about to cum when the clerk yanked back the curtain. "Here he is!" the clerk said, pointing me out to a pair of mall security guards. "I saw him following that high school girl and her boyfriend around!" My cock instantly shriveled, depriving me of the orgasm I had nearly reached and leaving me tingling and frustrated as well as embarrassed and afraid.

"Zip your pants up, perv," one of the guards said, looking disgusted. "And don't ever come back here again!"

As they escorted me out, I was **** to walk past Bill and Morgan, who looked surprised but amused to see me. Morgan was wiping something from her lips. Bill still had his hand on her ass. Morgan waved to me.

"Call me if you need bail money, honey!" she laughed.

As soon as I got out of the mall, I went into the alley and jerked off, knowing Bill was probably on the way to my house to fuck my girlfriend again. At least one of us would have something to cheer for.