I haven’t been able to read to the very end of the thread, so perhaps someone else has already addressed this.
You wrote “A lot of what people are saying is really helping. Just to be clear I’m not “patronising” or think I’m better, the very opposite really!” I think you have a blind spot here. It’s important that you think about this/understand this. It is indisputably patronising to lie and manipulate in an attempt to manage other people’s thought and feelings. I understand that you fully think you are doing it to spare their feelings or to be more accepted by them, but, as another poster explained, that is treating them as if they are inadequate or child-likeare, unable to cope with the truth, i.e. you know beter than them what they can cope with knowing without them feeling bad. That is patronising. You have not realised that you are patronising people, because it is not your intention at all to do so, but you are doing it.
“givethatbabyaname
Whatever your reasons for doing this, please be aware that it can come across as extremely patronising (“you think I’d be offended by your having a handbag that’s expensive/ more than I could afford?”, “you don’t need to manage my feelings, I can handle them myself” etc).
It’s also potentially very hypocritical because, well, your handbag isn’t a fake is it? You’re portraying yourself as something that you’re not.
Basically, this isn’t just a harmless quirk of character. It’s potentially quite hurtful and rude.“
Also, I think it is highly counterproductive that you are lying to people’s faces, spontaneously, and about things that they haven’t even raised.
People are not thick. They will spot that you will straight-faced lie to them about unimportant things at the drop of a hat. They may then not trust you, be suspicious of what’s motivating you or, at least, realise that you have a problem and feel sorry for you. Also, if you have children, they are noting all the lies you tell people, how ashamed you are of your expenditure, that how afraid you are of others’ hypothetical reactions and your lack of confidence in others to be able to cope graciously with the fact anyone else earning/spending more. Not great.