It's actually all the time now and sex seems to be more like a duty I even dread doing meth with him because I know what's coming next I don't even look forward to a couple of puffs because of this he did say at the beginning that it makes him horny and that made me feel real good because I'll never know whether it's me or the meth that makes him horny he says me but what else is someone going to say yeah.
No, I'm aware it's probably all the time. What I said was, the sex was probably 'great' the first couple of times, because of his enthusiasm, also because it would have been new and a bit exciting maybe, because of the combination effects of the meth and the chemicals that sex release.
I'm predominantly asexual. When I do have sex I would be bisexual/pansexual but I just label myself queer out of ease. Meth has never made me want to root someone, but I have a very low drive to do that anyway and for truly asexual people, chemicals don't change that just like when I commenced testosterone therapy I didn't get a huge kick in my sex drive either like most people tend to report.
The issue is, partners seem to work the best when people have the same or similar sex drives, which is why for me personally if I found someone I really liked, but they were more hypersexual, I'd be totally open to them fulfilling that need elsewhere as long as we had open communication. If I was lucky and found someone similarly disinterested that would be ideal.
It seems like your sex drive on meth is still much lower than your partner's. Whether or not they matched before meth, clearly on meth there is a big disparity.
I think you really need to have a serious, adult conversation about this at some point, because to be frank, what is happening is bordering on becoming very close to being non-consentual because you feel an obligation, and what concerns me is that if there is some trepidation there because of fear of consequences for refusal, then that is not okay.
If you think he will be receptive to a mature conversation about how this isn't working for you, then I'm less concerned.
It may be time to think seriously about whether or not you and your partners meth use is negatively impacting your lives to the extent where you would consider quitting, to keep your relationship together.
If you decide to quit because on balance the negatives outweigh the positives and they don't, then unfortunately it is time to consider leaving the relationship because you won't be happy.