My boyfriend left me because he thinks I don't give him space. Now that I don't make efforts to talk to him, he says that he loves me and he will marry only me. But there is a girl in her college who likes him and he is good friends with her. They spend time together and even talk for hours. But he says he cannot feel for her the way he does for me. What should I do ? I just try not to show him that I'm desperate. How can I make him realise that I really love him ?

This sounds almost high school'esk. You two should get to know each other and learn about each other. You two aren't ready to even start talking about marriage.

But yes - do not smother him or any person you are with. Have your own interests and friends.