I am trying to paint over wallboard (like paneling with a picture
design) in my bathroom. The first time I applied a primer and then my
first coat of paint. Several days later I started to apply the second
coat and it basically peeled like a face mask. So I started with just
the one wall and removed as much of the old paint as possible, lightly
sanded it, and then not thinking applied the first coat of paint
without primer. Now if it gets real steamy in the bathroom the wall is
sticky. What can I do? I really want the ugly blue roses from the
previous owner to disappear but not really wanting to get into putting
in more drywall (two other projects going on also involving new walls!)
Any advice - all appreciated!!

Try a layer of polyurethane first. If that doesn't work,
paper it with plain brown paper, and then paint that.