Jeli's are a problem for everyone! im lucky enough to have 6 thanks to a little trick.
once you've made a jeli resident, save your game and quit it.
Then go onto the main screen and click options, There should be a picture of a horstachio
in the top left, click on it.
Press copy game, and click the game with the jeli in it, and copy it to a new slot (if you
have one, if not, copy over to one you dont need)
Go into this new slot, and go into Gret. Fet. and buy a crate. Put the jeli in, and send
it to your original game. Bam! you have 2 jeli's. Use romance sweets to fufill there
requirements and buy a house from willy.

Good Luck!xx