He broke up with me ....

My partner of 7 years broke up with me 5 days before Christmas and I am heartbroken . We've had a few issues over the last couple of years but always worked through it because we wanted to be together . Two months ago we had a disagreement and I haven't seen him since then because he needed space and to get his head together as he had lost all positivity about everything and the future . We still talked every few days just general chit chat and I thought that we were getting somewhere but 5 days ago I asked him about us and he said that he didn't feel any different so basically that was it .. To say I was devastated is an understatement ... He said he still loved me and it's not what he wants but he has no choice as he needs to fix himself and to sort his mindset out so he can start to think positively about life again .. I just don't know what to do , I know he's struggled with this for a while but to just walk away from 7 years together has broken me into pieces and I don't understand how he can do that ..😢😢