A corporate burnout turned janitor receives a call from his ex-wife wanting to rekindle their marriage. Desperate to make it work, he must tell the truth and divulge his new career as a janitor. (Short Film)
This is a great premise- however that is all that it is, as you have not really described the main plot line.
I can see it going many different ways, some dramatic and some comedic. I think this is actually a good rom-com setup, even though you’ve indicated it’s a short.