the LS friend i'd genuinely take a bullet for now... how did i get here

this is going to sound mental but theres a woman in our LS group who started as my husbands play partner 3 yrs ago and is now my closest friend on earth. we talk every day. she knows things about me my own sister doesnt. her husband and mine are basically brothers at this point. we vacation together, our kids dont know eachother but the parents do, and last month when my mum was diagnosed with sumthing scary she dropped everything and was on my doorstep within 4 hrs. how did the LS give me a sister i didnt know i needed? anyone else has THIS kinda friend from the lifestyle