I remember my very first time. A friend of mine, we were both about 13, were camping in his back yard and talking about some of the girls in our class that we thought were cute and jacking off. He asked if I'd ever had a hand, other than my own, on my dick. I hadn't. We decided to experiment and I found that my hand on his dick felt just as good as his hand on my dick.
After jacking (or wanking as it's referred to in the UK) each other for a while, he asked, "would you suck it?" I, without hesitation replied, "no way".
I've often wondered how things might have been if, instead, I'd said, "you first".
Sexual enjoyment isn't about sexual orientation at all. If it feels good..., hey? Sexual orientation is about who turns you on, not what feels good.