I've found a lot of conflicting information regarding this on StackExchange and other websites together and I'd like to know if anyone knew anything definite about this. I am from the United States of America and I plan on visiting my partner in Scotland in January or February - my partner has thrown around the idea of proposal before in the past and is now very much talking about it, to the point where I'm making this post. I am more than happy to live in the United Kingdom as my partner has an established work life and I am floating around seasonal work in my life here in the United States. My living situation in the United States is not of the most positive with a lot of stress due to family and a blatant disregard for me as a human because of my LGBT identity. If he were to pop the question, would I be able to elevate my standard visitors visa to a fiancee visa assuming he/we could provide all the necessary documents? (on-track to earn 19,500 with 6 months+ of payslips to prove, facebook messages, facebook friend data "became friends with _____ nearly 6 years ago", discord messages, photographs of us together in various clean situations as he's visited me in the United States as I've visited him in the United Kingdom previously and a secondary account of our relationship by both a UK national and US national, lives in a private rental with...two cats, if that's relevant at all but I don't want the home office to believe they're being intentionally misled at all).
I've attempted to do my own research and I've hit a few walls - this question, posted on StackExchange a year and then some ago resolved with the original poster saying that it's "totally fine" - I've reached out to them personally but with no response. and then I found this question - again posted on StackExchange where this person, was sadly denied a marriage visitor visa and in the answer states that the only visa possible in-country to switch to is the fiance visa, but in the same light, I've found posts saying that the fiancee visa must be applied to outside of the country regardless of circumstance. I'm a bit of the worried type and I'd like to be able to plan ahead to whatever happens, especially when it comes to something like this. If this is possible, that's wonderful! I'm really glad. If not - I'll leave the country at the end of my visit and apply for a fiance visa abroad while staying at a friends flat; or maybe I'm reading sub-text that isn't there and he's not going to propose to me at all. :P
Either way, thank you all for any help that you can give me. I really do appreciate it no matter what you have to say.
Another thing is that I do plan on staying with him for the entire duration of the standard visitors visa of 6 months - I understand that my best chances of being approved for this is that I be completely forthright with the home office officer(? term is wrong ?) I was a student that was studying constantly for two years straight before realizing that I didn't want to be doing that, basically, cue the very-early-life crisis. I ended up going to Scotland to finally meet my long-time boyfriend while he continued to be closeted to his family and friends but only for a weeks time initially - he quit work as he realized he was unhappy with it and came to visit me for a month, after that, I visited him for a month and a half over the holidays, after that, he visited me in the states for two months before finally visiting him for 3 months - last having left the United Kingdom in August of 2018. We both began working again after dealing with some mental health issues, him under the NHS and me under....capitalism - I guess. If I told the officer this information, along with information regarding financial status and that fun stuff - what are my chances of being approved for the full 6-months? I would be looking into purchasing a return flight 6 months after my initial flight but I don't know if they're even listed that far ahead and that's something the officers generally wanted to see the most from me when I went previously.