The answer to your question is it’s NOT normal.
I was six years ago in the same situation as you, he earns 160k plus and I was on 32k. I had a 10k debt and after a year of being together he just paid it off, no questions nothing, just said I sent you 10k into your bank use it to pay off your debt. Getting married or having kids is completely up to you two in the future but if he is tight now with his money with you what happens if you did fall pregnant in the future and couldn’t earn as much, does he still expect you to pay your way? I understand you don’t want a hand out, but if you are questioning it now, it’s crossing your mind that this might not be normal. ESP if you guys have been together for 6 years, and are in mid 30s, married or not that’s long term commitments already.
Also agree with a lot of people on here about questioning his earns and still renting! When I met my partner he was already earning 160k plus and had a handful of properties, with the huge salary difference everything was a bit of a shock, and a lot of things he didn’t think was a problem was only a problem to me. He owned where he lived so when we moved in together I moved into his place, rent free, I paid for food only but even that was an issue, he would only eat organic or line caught fish or free range meat… basically the best of the best and I was well eating normal food, so we met in the middle, he topped up money towards food as I was spending up to £700 on just groceries a month which for me was a lot of money on just food. (6 years ago £700 a month on groceries was a lot of money, I know not it hardly buys anything )Travelling was another funny one- he travels business class and I did easy jet when we first met, when we first spoke about holiday I remember him saying let’s go to Greece, I was like yeh sure and I will pay my share… till I saw what hotels he was looking at, I was like I can’t afford that. So I paid £500 for that holiday as it was a “normal” amount of money for me to spend to go on holiday and he topped up the difference because he always stayed in 5*. I understand you don’t want hand outs but when it’s such a large difference in salary, it’s really hard to separate everything so equally. Six years down the line, we are now still not married but with a DD who is two, I stopped working during covid and he paid for us during that time as I’m people facing and was pregnant and high risk, and it was nice to just not worry about money or if he will “pay”. I was literally at hospital by myself on the phone to him as he wasn’t allowed in during covid times and I was bleeding, doctors said baby was safe but xyz issues causing the bleeding and he just said call work, quit for the time being, don’t worry about work, and I knew I can count on him.
even though my earnings is nothing compared to his, I’ve still gone back to work recently just for a bit of independence, I took 20months off just because I can and had the option. He’s never asked for me to go back to work, and has always just given me an allowance but I think it’s healthy for me to just go back part time.
I’ve also read that you spend a lot of your salary looking after a relative, which I think it’s lovely for you to do that. And it shows you have a kind heart, a good soul and it does mean you don’t have enough disposable income. If it’s a close enough relative to you, I do believe he should help too, six years together married or not he’s part of the family too.