Not sure if i should let go?

i love someone, i love him dearly. i love his soul. we have broken up, our break up was very painful and full of vitriolic anger (my part). But i love him. i can't bear the thought of him not being in my life. as lovers we were so bad. yet we friends in the beginning and i miss that. we spoke briefly the other night and i feel like he's giving up on caring about life. that breaks my heart - i feel like i want to save and protect him. yet i don't cope well with certain things he does - he lies and i can't stand that. yet i love the person, as a friend i'd accept his need to lie and it wouldn't impact me. i don't want to let go - people have let him down in the past, i want to be there so he begins to build that hope the spark of life. it saddens me beyond anything to think that he won't be in my life. after we met and connected so well which caused us to be friends i just thought we'd always be there for each other. i want that more than the physical. i miss his friendship. i don't want to let go but should i? so sad. my reaction to him lying really makes him back off - i have such a hard time dealing with lies. to me lies mean being fake and fake means nothing is real which means no purpose and i really lose it. yet i want to understand as his friend i know i'd be accepting-he's a great person (even though he tells me he's not), i know in my soul he is, yet his behaviour spins me for a sixer....help please...