Broken and Confused - Can We Fall Back in Love?

I have been with my husband six yrs. We have been married 1 yr 5 1/2 months. Since our marriage started, he has had an 8 month affair and a 1 night stand. He says he Loves me but he isn't IN LOVE with me but realizes the horrible pain he's caused me. He says he can and wants to fall back in love with me. As much as I love this man, and I do with all my heart, I just don't know anymore. Please, any advise will help!