To be clear, people absolutely can and do get past real cheating in relationships.
There are a number of reasons a person might cheat, and most of them have nothing to do with the person being cheated on, or the person being cheated with.
To work forward from something like this, the offender has to to communicate several things very clearly and honestly. Why did you do it? Why did you think it was OK? At what point did you decide it wasnt OK and why? How do you feel about it now and why did it not get discussed sooner?
Ultimately, you've described a scenario where your partner is not able to give you the trust needed for a healthy relationship. It sounds like there's probably not a lot left to be said about the situation between you and if that's the case then the healthy and respectful thing would be to end the relationship.
If you can't trust each other its game over. You can keep manually pumping that heart all you want, but eventually you'll tire out and have to call Time Of Death.
In my experience, most Christian Baptists don't know know much of anything about Israel, and these days I'd expect the bulk of that community to be blindly making the same mix of misinformed facebook posts as everyone else.
I don't think any sincere Baptist community would cheer on any kind of death, Westboro style groups excluded.