Hi SS
FWIW I think that the main problem is your understanding of the JW beliefs.
If you honestly believe that they are right then you will always be unhappy unless you become totally committed to their teachings and renounce your present life and love. As it stands it would appear that you can only give a part of yourself to the person and life that you are now leading. Is that really enough or even fair to you and your partner.
Limping on 2 opinions is a valid scenario whether in or out of the JW system.
For the good of your mental health you must once and for all prove the veracity of all that the WTBTS teaches and stands for. Surely you will admit that you owe this to yourself and your partner. This will of course take time and effort to throughly research.
You love and respect your mother but you are not a little child to be coerced by subtle veiled threats and innuendos however innocuous they appear.
You will at the end of your search be left with the scenario of deeply dissappointing either your mother or your partner but by then you should be totally convinced by your choice.
Sorry I hope this doesnt seem uncaring or harsh.
Good luck with your future
Anglise