Pp is right, biochemically this is immediately after the honeymoon period when people are on their best behaviour.
Personally I think 2 years is too soon to be living with someone - largely because of the above!
You don't really know someone until you've seen how they are when things are really not going at all well for them. Be that illness, stress at work, stress in the relationship... whatever.
It's actually I think better to wait to move in AFTER you've seen the best behaviour mask slip at least a few times so you know how they respond to stress. This is as true for men to be aware of as women by the way because women aren't perfect either.
For you op, you are at a point you can easily leave, you're not committed to this man in any meaningful way.
Do you have financial entanglements at all? I hope not. They can be dealt with anyway.
This is how he is behaving BEFORE you are truly committed to/trapped by him.
And yes, abusers do NOT start with a hit! Or even a slammed door or throwing something, they start by undermining you, undermining your sense of what's acceptable behaviour and by making you feel at least partly responsible.
This is a blessing in disguise op as at least you've been given good warning, it's now on you to act.