Have you tried speaking to him?
Is there any chance a marriage counselling may help? Sometimes, having a third party will greatly help a couple work through issues. It sounds like he is still making some effort at making things work. Being too possessive and controlling are behaviours that could be worked on. Do give counselling some thought and if you are open to it, see if he is alright. Give it a try before ending things permanently.
http://scc.sg/eng/index.php/counselling-services/
Take care!
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