I was very angry when he complained of blue balls after we had petted and I didn’t want to go further. It was as if he tried to make me feel bad.

A guy who thinks he should orgasm every time he gets excited is likely to put pressure on his lover. It seems that this is what your boyfriend was doing by telling you of his “blue balls”. He tried to make you responsible for his discomfort, probably hoping you would give him a hand or blow job. It’s good that you became angry. Never let yourself be pressured into sex! Blue balls are a little uncomfortable, but nothing serious. To solve the problem he can masturbate when he gets home or just wait for the pain to subside, which it will do relatively quickly.