What, though, if he displays godly humility and genuine remorse ?

Then it could be possible to salvage the relationship.

Be carefull though!

Perpertrators of verbal abuse often make elaborate expressions of seeming remorse after they hurt someone--
only to repeat their hurtfull speech the next time they feel provoked.
Time will tell how sincere he is about makeing changes.
One good indication of how serious he is would be his willingness
to seek help from Christian elders.
{ James 5:14-16}

Realize that" all have sinned and fall short of the glory of God. "
{ Romans 3:23 }

You will search in vain for someone who is perfect.
All married couples will expirence some measure of " tribulation in their flesh " because of imperfection.
{ 1 Corinthians 7:28}

In the final analysis, you have to decide if his flaws are ones you can live with happily.
Again, allowing some time to pass is the safest way of makeing this determination.