Going without sex

If anyone has had experience with this or has advice, please comment.

Me and my partner have been together for about two and a half years. Although he is older and slept with a lot more people than me, he is only the second person I’ve been with sexually.

It was amazing, I’m talking teaching me new things and can’t keep hands of each other. We would be doing something several time’s a day. Anyway, for the last year or so it slowed down. Not as regularly but then about six months ago it stopped completely. He won’t let me even touch him down there. I miss it and have such a high sex drive. I’d never be one to force him and I’m certainly not a cheater but I don’t know what to do. He won’t talk about it with me or if we do it ends up with him starting an argument. When it first started he agreed after weeks of nagging he would see someone like a doctor (as he said he thought it could be related to previous steroid usage) but, as I say, it’s been half a year and still nothing.

What do I do?

Please help ladies.