ok, here it goes.
i know you feel pressure, i know you love him, but you have to teach him a lesson...... read my sitch, from my perspective, i was not a good H until she dumped me....then i realized.
your H knows you doubt and that you love him. be firm, consequences?? he will probably blame you, and try to separate maybe.. do it, separate, show him. i know it is so hard, but that is how i learned. you have to show him you are serious about this.
look, do you really think your R will be better after you do that??? it is like saying to an 18 yr old girl that her life and relationships will be better if she has sex, oral and anal....... it is so stupid.
you fear divorce, i know, and of course i can tell you this because i am already separated, i suffered so much, but it has made me a better person. study what is wrong with your R, be brutally honest, dont hide things about yoursel and him, write, read, and talk, maybe it will be difficult, but that is the way to solve your situation..........there is no other way. read the book!!!