Did anyone else collect the Sweet Dreams series of books back in the 80's?

My favourite was the first in the series called PS I Love You, (nothing to do with the recent book or film) and the author was Barbara Conklin. It was a great book, made me cry every time I read it - about a girl called Mariah and a boy called Paul.

I had loads of these books and I found some of them recently in my parents loft... but my favourite was missing, what a shame!

I remember saving so hard to buy these books one at a time. Looking on the back covers now, they only cost 75p each!