My boyfriend's blue balls

So my boyfriend recently told me he had blue balls. I thought that was his way of asking to have sex but ... Apparently he's building up for a great orgasm. He is the only man I have ever heard say he likes getting blue balls because he spends the next few days edging(masturbating until you're about to cum and then stopping). I asked him aren't blue balls supposed to hurt and he said yes but that, that's part of it. No pain, no gain. Anyone else's boyfriend do this or is mine just weird?