Despite loving each other, there have been many issues that seem to drive you apart. Recently your wife has made a decision to separate in order to give herself the time and space to think things through. In the meantime you are feeling helpless, feeling that you have no alternative but to give her the time and space she needs. You might want to use this time as an opportunity for you to evaluate yourself. You might want to examine the role you played in creating the stress between you.
Marriage is like a dance, each partner making a contribution.
When one person begins to change, the dance changes. You can change some aspects of your behavior and thereby change the nature of the interaction between you. The issues of jealousy and control can be very destructive to any relationship. You state that you both have difficulties in these areas. Perhaps you could suggest to your wife that you would like to seek professional help together to learn how you can be a better husband.