A: This is a complicated question. At first, I noticed that the phrasing of your question implies that this has been an ongoing problem and not a lack of interest that has just started recently. So my first thought was that you might not be attracted to females, but then I noticed the word “more” in your question, which implies that you do find your partner at least somewhat arousing.
I think the first step, assuming that you are of legal age, should be to expose you to a lot of penises in various states of arousal to gauge your reaction. If you find that you have a powerful erection then the answer may be that you are “barking up the wrong tree”.
Second step, look at a lot of vaginas and female breasts. You should be looking at static pictures and videos of females in various states of arousal. If you, again, have a “raging boner” then you may be what is referred to as a bi-sexual. As a bi-sexual we are left with the original question no closer to being answered, so I prefer you as a homosexual since that takes care of the question entirely.
If we have discovered that you are not aroused by male genitalia, or that you are indeed bi-sexual, then we need to take a closer look at your female partner. Does she bath often enough? Funky body odor has ruined many budding relationships. Does she wear sexy underwear? If she wears stuff that reminds you of your grandmother that can be a real mood killer. Unless you are into that kind of thing in which case I have a colleague doing a study that would be interested in talking to you. Without knowing more about your partner, or yourself, that is the best I can offer.
Now, if you have discovered that you prefer male genitalia and would like to change that you should contact me directly. While I personally don’t see a problem with a person’s natural sexual preferences, I would like to offer an alternative to those who find it making life unbearable. I have a theory about low doses of gamma radiation combined with electro-shocks that just might be able to alter preferences, or even entire personalities! It is a fascinating experiment that I cannot wait to try! I hope this helped.