First time posting here and yes this is a true story fantasy semi fulfilled. Quick backstory, I have a thing for titty fucking and making custom dick tributes using an iPad as a second screen to pose against the backdrop of girls nudes. Sometimes even filming cumshot vid tributes.

Anyway, a few months back myself (21m 6 foot), best friend (21m 5”8) and his girlfriend (21f 5”6) went away for a weekend getaway to another city. Before going, I flirted with the idea of a 3sum but didn’t get far with either of them except for briefly showing them a 3sum vid I have on my phone.

I did however really want to know if I could hypothetically fit between her tits if we were to have a 3sum. Would I be able to titty fuck my mates girlfriend. I’d say I’m slightly above average size and her boobs are on par of average and she doesn’t have such a big ass (very petite young lady). During the trip down I was honestly so horny and wanted to compare my hard cock to her tits. And I figured the only way how was to find her bra and put it against my dick to see if I’d fit.

Well one morning, they both decided to head out for brunch and I slept in and told them to go I wasn’t feeling hungry, the only thing I was hungry for was jerking off to whatever I could find in her suitcase.

They weren’t going to be gone for long as they don’t eat much, so I took my opportunity as soon as they left the apartment we were staying in. I stripped off and went straight to her suitcase to see what I could find and lo and behold I found her g strings and bras and instantly got rock hard.

I proceeded to jerk off with her bra wrapped around my shaft but didn’t want to risk pre cumming or leaving any marks on it, but still wanted to have a visual record of my size compared to her boobs. So I took a few pics with my phone basically dick tributing her underwear.

Just in the nick of time too cause as soon as I had finished taking the snaps, I heard them unlocking the door! So I quickly put her bra and underwear back the way I found it and ran to the bathroom fully naked and turned the shower on. It was a close call but dam it would have been really fucking hot to see their reactions to myself jerking off a hard cock in her underwear.

Turns me on everytime I’m with them, just knowing they have no idea my cock have been all over her underwear