I've been looking for years?

I've been trying to find this one for a very long time, but I've had no luck. I believe it's on Dimensions, though I could be wrong.

The story is basically about a college student doing a report on feedees. He puts out an ad and gets a response and thinks that the raven-haired girl who responds is going to be his feedee. However, she says that he has to be one to know one, so she locks him in her house (Victorian, I believe-the weird details you remember) and feeds him until he's large enough to the point where he can't walk to the open door. They both laugh at the end.

Thank you very much!