Falling Out of Love?

I have been with my boyfriend for 3 years. Our love is extremely strong. Although, we have been through hell and back. Lately, since he's gotten out of jail (for first offense second degree assault, not towards me) there has been a lot of negative light in our relationship. Every thing was going okay and then all the sudden I looked at him and thought, "Do I even love you?" and ever since that one thought, I couldn't shake the feeling. Of course I love him, I love him more than anything in the world, but I'm not.. IN LOVE with him.

Has this happened to anyone else? Can I fix this? I feel like shit and haven't stopped crying for days. Please help.