Even just hearing that you're hypothetically considering this prompt fills me with joy, anon.
Honestly, I think I'll be fine with anyone as the ex. A Marvel bad guy would be great, or any of the characters you mentioned, or anyone else you want to use.
Mirrorverse!Kirk is a fascinating idea. (Also I suddenly have a mighty need for normal!Kirk/Matt, but that idea can wait for the next prompt post)
Re: Matt's first "love," abuse, dubcon, underage
Even just hearing that you're hypothetically considering this prompt fills me with joy, anon.
Honestly, I think I'll be fine with anyone as the ex. A Marvel bad guy would be great, or any of the characters you mentioned, or anyone else you want to use.
Mirrorverse!Kirk is a fascinating idea. (Also I suddenly have a mighty need for normal!Kirk/Matt, but that idea can wait for the next prompt post)