Most Helpful Guy
If it's something that is temporary then you should be flexible. Smoking is a great example, he could easily quit smoking and you could even try to help him. Now other things like he's cheated on past girlfriends or he's abusive these are not really fixable problems and should not be overlooked.
Most Helpful Girl
Do you love and care for him that much to let this one think by?
There's a possibility that you could also help him quit smoking
But don't force him to
Quickest way to a bad relationship with someone