I'm trying to model a simple sofa in blender but after I applied subdivision surface modifier i got that nasty gap. On the other side it looks good.
here ^ is how it looks in edit mode, there are not two objects but one so moving the small part in won't do.
PS: no need for elaborate stuff since I'm using it only as a prop, it was not intended to be a high quality object in the first place, so any solutions will do (even if it's not 'by the book'). Thank you!