Who knows what happens to us 5 minutes from now, we can turn into pumpkins, get a very bad news breaking our hearts, be kidnapped, move away, be run over... or just cross the street and run into a stranger who can be behind a change of our lives in the future, we can't foresee yet. Sometimes we run into people who make a mark on our lives right away, and sometimes we run into people we feel we could change our lives for right away. Nobody can know whether it will happen.
Sometimes we depend too much on our experiences when trying to predict what may happen... It is our bad experiences what is protecting us, once we have got them, but have we thought about it when we were getting these? It is possible that as we grow older, we are becoming more and more afraid of being hurt with more experiences of having been hurt. Isn't it strange in a way? We are seeking happiness and love and companionship and at the same time we are closing up to strangers who might offer just that, but we have been hurt before... many times by ourselves, strangely.
One day we realize that and change and experience the moment of letting go, when whatever comes, comes, and if we let things flow freely, we may feel the freedom, being ourselves and not afraid.