Sex advice with Suzi Godson: My boyfriend has become lazy about sex

My boyfriend and I get on really well and have a great relationship in general. But he’s become more and more lazy with sex. He lies there and expects me to do all the work. He’s always telling me how gorgeous I am, so I know it’s not that he’s not attracted to me. He seems quite touchy about it and is always changing the subject.

You say that you and your boyfriend get on really well, but what great relationship involves one partner doing nothing while the other does all the work?