Every chance he got, he would lift his shirt to scratch his abs, exposing his leaking erection whether there were people around or not. A few times wh...n we were window shopping or looking out at the water, he moved behind me and humped his cock against me. By the time we exited the elevator to our floor, his shirt was clearly stained with his leaking fluid and I was practically vibrating with arousal. I couldn't understand how he could walk around all evening with his erection yet be so calm.I. Anyway one night it was about eleven o'clock I pulled off the highway and ended up at the Lion Den adult book store, I was asking myself if I could really have the nerve to go in dressed like this, I was wearing a short brown skirt, tan blouse and three inch open toe shoes. I sat in the lot for a few minutes watching a few people going in and out trying to talk myself in to going in, there was only a few cars in the lot so I thought what is the worse thing they could do other than ask me to. I lay there, still breathing heavily, enjoying the aftermath of my orgasm. A few more weeks went by, bringing us into March, and ever closer to Sarah’s graduation and her leaving for her job. There was still a school vacation period to come in mid-March. The previous holiday school break, Sarah and I had hit our peak of sexual activity. It was during that week off that Sarah and I had the house to ourselves and had enjoyed some variety of sex almost every day and sometimes two or three times a. I've always been good at this, I have no gag reflex. My cock is almost throbbing now as I taste the sweet-salt fluid in the back of my throat and he puts a hand on my head to push himself deeper, moaning each time my lips move up and down his shaft and my tongue strokes around the tip. The moans soon turn to gasps.'Alec... I'm... I'm go into cum...'I take him in especially deep and he shivers as hot jizz fills my throat and I drink it down, milking every drop I can from him. He tastes so.