Love yourself the way you are Joosey, it shouldn't matter that you have stretchmarks. I love my wife complete with hers and she's never felt the need to worry about them plus they can't be got rid of anyway and worrying about them will only make you angry and unhappy.
Sorry love your stuck with 'em. I've got loads on my arse and I've tried lots of different creams etc which make a slight improvement or .....get a tan they don't look so bad :-)