Does your url end in .jpg or .png or .gif or whatever your file was when you originally uploaded it? You need the direct link to the image. If not right click the pic you uploaded on the site and open image in a new tab. Copy and paste that url to use in between the [img][/img]. I think that might be the issue but if it's still being a pain let me know.
Great gifs.
I was trying to remember if that was the only time they got to "celebrate" Valentine's Day.