When a person is your soulmate, but they also share similar thoughts/ideas, feelings/emotions, and beliefs, etc. regarding soup, they also become your soupmate.
Girl #1: Hey you remember that guy I met last spring?
Girl #2: Sure, you guys hit it off pretty well. You said he was your soulmate.
Girl #1: Yeah, well I found out last night that he loves soup as much as I do. Both of us even share the same favorite kind: mushroom bisque! He even knows how to make five different kinds from scratch.
Girl #2: Oh my god, it's like you two are soupmates!
Girl #2: Sure, you guys hit it off pretty well. You said he was your soulmate.
Girl #1: Yeah, well I found out last night that he loves soup as much as I do. Both of us even share the same favorite kind: mushroom bisque! He even knows how to make five different kinds from scratch.
Girl #2: Oh my god, it's like you two are soupmates!
by archerider May 02, 2014
Get the Soupmatemug. Someone who is like your soulmate but instead you enjoy eating/drinking soup together, so they become your soupmate.
Person 1: " I just love Heinz tomato soup."
Person 2: " OMG ME TOO!!!"
Person 1: " Omg we are soupmates!"
Person 2: " OMG ME TOO!!!"
Person 1: " Omg we are soupmates!"
by Glazier January 24, 2018
Get the Soupmatemug. 
In the My Hero Academia SMASH manga introduction page for kirishima it says "Katsuki likes to pretend to be pissed off about their friendship, because he can't admit that kirishima is chicken soup for his soul". This has let to kiribakus calling them soupmates.
by anonymous February 18, 2021
Get the Soupmatesmug.