Love requires commitment. They go hand in hand. If you truly love someone, you are not looking to leave them for someone else. You are not looking to hurt them by being flaky, holding back or being inconsiderate. That's not love.
You must never make a commitment deeper than the love you feel. It would be unfair to both of you to act otherwise.
depends. in generaly if it costs me too much then i have to love them before commiting. But if i have nothing at stake then id stick with it. BUt id never marry someone i didnt totalylove.
Ideally somewhere in the middle, but if I have to choose one - I'd take the first option.