My little white lie has ruined my relationship

DEAR DEIDRE: I stupidly lied to my ex about having a new boyfriend, but my boyfriend found out and now he won’t forgive me.

My little white lie has ruined my relationship and I don’t know what to do.

I’m 18 and my boyfriend is 19. My ex is also 18.

I was with my ex for three years, and I broke up with him because I fell out of love.

He was so upset that when I met my new boyfriend I told him I was still single – just so I didn’t hurt him more.

But...