@neatbluedog - I have to admit that with a migraine today the walls of text that she wrote tended to run together so perhaps I mistook how strong his relationship with the JWs was.
And perhaps brainwashing was the wrong term, but no doubt a long term relationship starting so young has a sort of enmeshment (substitute that for brainwashing) that is extra hard to pull away from. Clearly this lady has her own spiritual walk but it's likely that if he's a strong personality or has a strong pull toward the cult then he's impacted her. That much is clear or she wouldn't be here.
What's absurd is to encourage a person to pursue a relationship at such a young age and with so little experience where the guy already broke up with her for the cult. Go find someone more healthy. You're young and chasing something you started at 14 that has at least one major red flag. Most people aren't with the person they were with at 14 long term. There are reasons for that. Not that it can't work, but you're chasing something that has proven to be bad instead of pursuing good. That's my opinion. Yours may differ. We're not in a cult and don't have to agree.