Do you think that someone's sexual orientation can change?

Can the orientation change? Yes. Can a person change their orientation by sheer force or will? Not normally. The article describes a number of cases in which people discovered at various points in their lives that they were or were not attracted to the opposite sex. The influencing factors on these changes is still not well known, but we know that they happen, that people do actually shift sexual identities.

I believe in sexual fluidity. So sometimes it can sway slightly one way or another. Or sometimes people just happen to come across 'that one exception' that doesn't fit their normal sexual orientation. But I don't think it usually sways a lot. I don't think a completely gay person can become completely straight and viceversa though.
That being said, it's nothing we have control over. We can't choose who we're attracted to

Well to simply answer the question yes someones sexual orientation can change. There have been studies that could suggest that however to be honest, not sure if that research can be really all that reliable because I think its seen as damaging to put someone who is homosexual through "theory" because of the damage it may cause. I think it deals more with your environment and influence if you can "100%" change your orientation.

as I said before yes! I believe so. LIKE IT OR NOT THAT IS MY OPINION! A straight person can be deeply hurt by their partner, and decided to switch their orientation. I think that is not a good reason to do so. a lot of people
switch their orientation. and some are not born with it but become. they become gay or lesbian! You can make your self gay then be straight again!

Yes, of course.

Yes, I think it is possible for a person's sexual orientation to change but I don't think a person can change it voluntarily or through something like conversion therapy, which I personally think is quackery.

I think they can be changed, if not literally they can at least seem to change.

I sometimes think that in your DNA your preference for what gender if any specific gender is set, but since the DNA and our conscious minds are not in a full connection with each other we can easily be confused on what it is we really are attracted to and as we try to search and find what it is we are attracted to we have moments where we think it's one but then it seems another. I think I phrased that well.