Give in to Mrs. Allen's request

Hesitantly, you agree to Mrs. Allen's request. "Ok, I'll do it. But I don't know how I'm going to be able to tonight. Tia's been all over me. She wants to come back to my place tonight, plus she's sitting right there! It's not like the two of us can just disappear for a while without her wondering!"

"I've already got a plan figured out for you. Sometime after dessert, you just tell Tia you don't feel well; maybe a stomach bug so she doesn't want to be around you. Come back about an hour later; that'll be enough time for me to excuse myself to my room for the night without it looking suspicious, and go around back to the deck. There's a sliding glass door to my room that I'll leave unlocked for you in case I'm stalled. All you need to bring is this thick cock of yours. Think you can handle that?"

"You know, that might actually work. If we're going to do this tonight, though, you have to stop with your teasing for the rest of the night. Tia might catch you and start asking questions."

"Alright sweetie. Why don't you bring the dessert in to the girls and start thinking about the excuse you're going to use. I'll be there in a sec."

The moment you sit back down, Tia's hand slides up your thigh and begins rubbing your cock through your pants once again. You sit there torn, enjoying the handjob you're getting through your pants from someone you truly care about, while thinking about how badly you want to fuck her mom. Lost in your thoughts, a low groan escapes your mouth before you can stop yourself, making Tia stop what she's doing. Glancing across the table, it appears that neither Nicky or her mom noticed, but Tia smacks you on the thigh regardless. Realizing you won't be able to control yourself, Tia takes her hands off you, allowing you to settle down.

You can't think of any better excuse than the one Mrs. Allen has already come up with so you just start looking for the right time to use it. Pausing midway through dessert, you excuse yourself to go to the bathroom to build your alibi. Figuring you should be in there for at least a little while, you pull out your phone to watch some porn. Typing in "milf creampie compilations" you find a 6 minute video to entertain yourself with, while giving you ideas of what to do with Mrs. Allen tonight. Finishing the video, you flush the toilet, wash your hands, and make your way back to the table, rubbing your stomach and faking a look of discomfort on your face as you do so. Waiting until Tia takes notice of your acting, you lean into her and whisper to her "I don't know why, but my stomach is really bothering me right now" you lie.

"Oh honey, do you need some medicine? Can I get you anything."

"No that's OK. I think it'd just be better for me to head home. As much as I want to see what you had in mind for tonight, I don't think I'll be up to it. It's probably better for you to stay here tonight. Maybe you and your sister can go out somewhere together instead. I promise I'll make it up to you."

"Alright babe, if you think that's what's best. I hope you feel better."

Standing up from the table, you simply tell the women you're not feeling like yourself and say your thanks and goodbyes and leave for your home. A mix of emotions swirls in your head as you think about cheating on your girlfriend with her mother; making you feel guilty and horny at the same time. The wink and smile Mrs. Allen gave you as you left gave you the impression that she has no reservations about what she's suggested, and has you fantasizing about the things you want to do to her as you make your way home. Your dick strains against your pants making it difficult and uncomfortable to walk, but at least the walk isn't far and will save you from having to hide a car when your go back later. Arriving back home, you pop a pill from the stash of Viagra that you have and sit back to let the medication take effect. You're not sure if anything like this will ever happen again and you plan on making sure you're able to take full advantage.