Relationship issue. Ask for his help.

The guy who has been thinking of long term.relationship with me has backed out. He has decided not to take it forward. He and I have been having physical intimacy but no intercourse. I could not handle it when he says the reason for giving up.on me is because I have extreme emotions like extreme love , extreme anger, extreme possessiveness. I guess these are normal in any relationship if you take your partnee seriously. You think about the partner or get worried about him/her. May be I am wrong. Even If I tell him lets take some time to think or take a break from each other he does not agree and keeps repeating he could not think long term with me based on few incidents happened in last 4 months. Anyways, wen I try to stay away and not talk he calls me to help me with the problems I am going through. He just says he is being helpful and doesnot have anything to do with relationship. But I get the feelings back when he is around. Its always him who calls up and I never ask for his help.