Yes, and also people of the same sex can as well. Friendship is founded on respect and being able to respect someone's lack of romantic interest or availability is important.

Very much possible. If someone gets the wrong impression, correct them, and they can choose whether the friendship is of value without sex. If it isn't, they probably weren't a friend in the first place. If it is, the tension will be resolved. Some people just need to be clear on whether there is a mutual attraction. Others are just jerks.

For over the last 30 years, I have been close friends with a man who started off as the husband of one of my best friends.
Even after they divorced, we have remained extremely close, with no "benefits".
Had another male friend, with no benefits. Introduced him to the woman (my best friend) he would marry and father two children with. Even after they divorced, we remained close friends until he died.
It is completely possible to have a long-term friendship with a man and not ever have sexual tension become a factor.

Possible, very possible, at times recomended.

Sure! I've actually been really good friends with one woman over 20 years!

I think the answer is in the question.. "maintain a platonic friendship"

It's possible if you both know/admit that rumpty pumpty is not on the menu and make sure it never gets there.. which may or may not be easy!

That said, I much prefer the company of women as friend and/or colleagues!

Absolutely. Some of my best friends are men.

Yes. Not so much when I was younger, but more so now.

there's always one person in the pair that might change the format at any given moment [ should they be the same age -ish ]

I think it's possible if both people are gay.

It sounds like a loaded question. Because you said relationship instead of friends.

Of course it's "possible". How 'probable' is something else. IMO, it's all in the EXPECTATIONS from the get-go. Most of my experiences have been... if I didn't make advances, the lady was usually insulted whether she cared to admit it or not.

It can work but messages have to be clear and if you have another relationship and break up, you need to avoid "leaning" on him/her for comfort and totally use another friend to avoid the fwb trap.

Absolutely possible, with the caveat that you or they are romantically interested in other people, or in no people, or in the same sex.

I've yet to find a male/female friendship where one or both of them are attracted to one another, and single, and they simply remain platonic friends.

I can say that the odds of a successful platonic friendship, without the aforementioned situations, has never lasted long term from my own experiences. For me or anyone I've known.

I have female friends that's just platonic, so yeah it is possible

Yes, absolutely. Ever since I was a little boy, most of my friends have been female, to this day. Never been a problem in any way, at least for my friends and I.

I think so long as that line is firmly made clear then I see no issue with it. I've had women as friends that I've known since highschool, we practically see one another as siblings. It's always nice to get an honest opinion from someone of the opposite sex, and that you (most importantly) trust enough to confide in.

Yes.

Very much so. I have close female friends one of which for over 20 years. In fact I have female friends coming out of my ears (just wish I had one cumming out of my ears) lol

Yes

For me never.

Absolutely. Most of my better friends have been women.