Hi, stateofgrace, and welcome to Psych Central! Hmm, that's a hard one. What would you want him to do to make you feel more secure? Tell you he loves you more? Give you things? Spend more time with you? People have different things that make them feel loved--"love languages." This topic might be one to check into. Here's a link: http://www.the-relationship-coach.co...ages-quiz.html. If he's not interested in actually taking the paper-and-pencil approach, then you might tell him what you need and read at least some of the statements to him and see whether he would like that or not.

What do your friends think of him and the two of you together? (Not that that's a crucial issue. It's just that other people might be able to be more objective.)

It could be that you are still somewhat reeling from the breakup of your other relationship and worrying that this relationship will break up, too.