getting over a boy rahhh

ok, basically theres this guy and we used to date and it was the happiest time of my life, when we split up i found it really really difficult, i've been hung up over him for 6 months and im still hurting, ive spoken to him a lot about it all as he's very supportive and understanding, but he doesnt feel the same way and im struggling to work out what i did wrong to lose him, im only just managing to move on and i just wondered if anyone had any advice or tips, btw it always gets better 💗💗