First and foremost, I'm very sorry for your pain and confusion.

What doesn't make sense is when he says he loves you from the bottom of his heart, but cannot be with you. If someone loves you with all their heart, why would they want to break up then?

Now it is possible that he's pushing you away because he doesn't want to bring you down with him through his depression, or it's like Divine suggests and it may be his way of letting you down easy.

I tend to think along the lines of Divine's thoughts that perhaps he's trying to let you down easy. Then again, I cannot fully say because I am not in his head nor do I know him or your relationship.

I wouldn't reach out, either way. He's broken up with you, he has his reasons, whatever they may be, and it's better to try and accept that and work through it rather than push him or try to hold onto the relationship.

Again, I'm very sorry. I hope you have a support system around you that can help you through this, and perhaps a therapist as well. My own therapist has been a huge help through breakups, along with friends and PC. ((((((Hugs)))))