Welcome Kom. I'm so sorry to hear of your sad situation. One question - Is he baptised? If not, his exit will be a lot easier.
I used to be a zealous JW until I opened my eyes a few years ago.
I once knew a baptised JW who was dating a girl who was studying with two female JW's - but that wasn't good enough for the elders. They told him that if he didn't stop sitting beside her in the Kingdom Hall, they would take away his "privileges." That's the cult your ex is in. You're not good enough for him if you don't join them - fact!