Just asked my DH what he thought of the situation, his response " just get rid of him"... I agree, what would ever happen if you were really ill, what would he do? I once had an awful case of of D & V and ended up in the bathroom with it coming out both ends - DH, who physically doesn't deal well with that sort of thing, was amazing helping me. That's what you need in a DP, someone who realises you're human.
Saying all that, DH just farted on the couch next to me so he can't really say much at the moment.
I think that you're taking the right approach in seriously considering if this is someone that you want to be with. Personally, I'd be showing him the door...