Sure, why not.
What would it look like? Same as the others, text field for description, pictures, interests.
If it’s foss, I would want to see a https://reproducible-builds.org/ or some other method of verifying the accuracy of the process. Getting no matches would be better than the fake stuff the others do.









No, or rather, that doesn’t matter.
I would say I didn’t have a good grasp on reality and what I wanted until my late twenties. Your perspective will continue to change, just as it has from when you were ten to now. Maybe your marriage will struggle with the changes (in both of you). So waiting is an option. But then again, I know people who fell in love at 15, married and are happily married 20 years later. Maybe that’s you maybe it isn’t. The internet doesn’t know.
All you need to be aware of is that marrying isn’t just something you say, it also comes with legal complications. A divorce isn’t as simple as teen breakup.
Good luck though!