If I were you, I'd let him keep asking you. "Get used to it" sounds like what I'd say if I'd really enjoyed it and knew I wanted to do it again. If he's not initiating it, I'd drop hints rather than straight up asking for it.
Just like ask him if he wants to go out, or if he wants to get together and hang out. I think the whole straight/bi/gay thing is way too black and white. I think most people are somewhere in between those points.
I'm something like 90% straight. I've hooked up with over 30 women, but only 3 guys. One of those guys sounds like your friend.
He's probably 95% straight or more. We've hooked up off and on for years. I agree that, unfortunately for you, your friend is likely to get into a relationship with a woman, and when he does, he probably won't want to hook up with you.
That has happened many times with my friend and me. He calls me sometimes, or I call him to see what's up and in the past when we've both been single, we've end up hooking up, probably a hundred times or more over the years. The cool thing is, whether we're hooking up with each other or not, we're really good friends.
For now, just text him the way you texted him before, would be my advice. As a friend. If he stops wanting sex from you, remember he may want it again sometime later.
I recommend you stay friends with him, either way. You're probably never going to have any kind of relationship with him, but friends with benefits can be awesome. And of course, you're free to have as many friends with benefits as you can make!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.