If you’re not sexually compatible with BF I’d end things as he doesn’t sound able to be guided by you or want to fully please you & ultimately you don’t want to have to constantly be telling him what to do.
Only prob with FWB is that the sex being how good it is may well prevent you ever properly connecting sexually with a new partner.
And you sound like you’re always comparing & always will compare any sex with this. At least in a traditional relationship if you were dumped or the dumper, you’d maybe always hark back to amazing sex, but know that it was over & not something you could have again (unless you went back after splitting up but that usually only lasts so long).
So v hard not to go back for amazing sex with your FWB but bear in mind you might regret it if it goes on too long.
BTW does FWB not want a relationship with you or with anyone?? How likely is it that he will couple up with someone else? Is he just not wanting commitment atm period?
Other thing to hear in mind that while you have great chemistry with FWB part of the reason sex may be so good with him is precisely bcos it’s not within the parameters of a conventional relationship. Meaning you never argue, have the stress that affects relationships, only see each other for highly charged fun, don’t get to see their bad bits etc etc
So it could be skewing things bcos any relationship will never be able to complete.
Enjoy it while you can though - conventional relationships are over rated a lot of the time!