I had an issue once where a male Sim had the Close-Knit lifestyle whilst his girlfriend had the People Person lifestyle. So that was a little awkward! I was able to remove the lifestyle without issue thankfully.
At least we don’t have to have a certain number of friends to progress in careers anymore, like in Sims 2. Befriending Sims can be hard enough, never mind maintaining all those friendships! Having that on top of earning skill levels was pretty tough for me. Thank God I found a mod that removed the friendship requirement for all careers in Sims 2.