Did he forget his ex-girlfriend?

When you start a relationship with someone who hasn’t separated for a long time, a feeling of fear nests in your soul.

Does he still think about her? Am I just a temporary partner, until the anger gets over my ex-girlfriend? What do I do if I find out that she still loves her?
It’s hard to invest in someone you’re on the verge of falling in love with, fearing that they might return to their old passion…