Jerking Off as a Favor

Over the past two years, I have been friends with four lesbian/bi-sexual women, who normally don't let me have sex with them outright, but who do allow me to perform sexual things for them. A lot of this involves masturbation in private and public, and this story is about one of those more private times. Jane is aged 41, and the oldest of this foursome group. She is athletic, but not tan. She has nice tits and keeps her bush shaved clean. I've jerked off several times watching the other women take turns eating her out. Jane is also a cum slut. She loves it on her face, hair or clothes, and it can come from her own body, or someone else's. In June, 2014, I was at the home of Jane (long story as to how I know her prior), and after I had done some work there, she let me look at her vast collection of women photos she had collected online. I'm sitting there on her couch with my dick in hand, slowly stroking myself after lubing up, watching these erotic female pictures on a large screen TV. Can't do that at home. Jane was getting ready to go somewhere, when she walked back into the living room, just as a big drool of precum came out of my dick, and dripped on my thigh. (I was sitting there totally nude.) Jane kind of moaned. I smiled and asked her if she wanted to fuck? She paused a minute and said she didn't have time, but there was something I could do. She left and came back moments later with a pair of white cotton panties, bikini style. Jane was wearing this yellow dress down to about her knees. I knew she seldom wore underwear, and asked her why the change? Jane smiled and said, "I want you to fill these with your cum, and then I'm going to wear them!" She then laughed and threw the panties at me. I have to admit, my eyes got big, and my cock stiffened up even more at that thought. I said, "Fuck, yeah!" Then placed the crotch part of the panties on the floor, got down on my knees, closed my eyes and went to jerking hard. It wasn't long before I unloaded a full blast of hot cream into the panties. Jane then came over, picked up the panties, slowly brought them up her legs (I could see a semen trail on one calf), and pulled the panties into place. She then closed her eyes, and moaned as she pressed my cum into her pussy area. Still on my knees, I went to jerking again, saying "Fuck! Fuck!" In just a moment, I shot a small bit more of cum out onto the floor, and just leaned back exhausted. Jane did tell me that I was a really cool guy for doing this, and said she had to be going. Jane left with my cream in her panties. I admit when I got home that night, I jerked off again thinking about this. Jane's girlfriend's love this story. And, yes, we did eventually make out once, but that is for another page.