You can't save someone who doesn't want to work on himself... and who doesn't want to be in a relationship with you.

I would focus my energy on working on, and prioritizing, yourself. Why do you want to stay in a relationship where your partner is clear that he does not want a future with you and has no sexual chemistry with you? Why are you willing to sacrifice your needs for another? Why don't you think that you matter as much as *he* does?