Not giving in. Am I stupid?

haze
So lately me and my boyfriend where house sitting for my mom and everything's been perfect. We've been happy together and all sort. 
​The last week or two he was being off with me, then I caught him on the phone to his friend Dominic saying he was thinkin of giving up and that it's more refreshing to go to his parents than be with me. 
​Today he's told me he doesn't want to be with me anymore. I don't know if this is just his ex drilling shit in his head again or the stress of finding out his dads dying but it's killing me. 
​My life just isn't worth living with out him. I used to self harm and after today that's the closest I've came to doing it in the last 3 years. I love the guy to bits! We were lookin to get a flat an all sorts! It was only 3 days ago we was cuddling on the sofa looking at flats online for god sake! 
​I've told him I won't give up with out a fight n that I've fought to hard for us and our relationship for the last 2 years to give up easily. 
​Am I wrong or a bad person for refusing to let him go without a fight? I love him with all my heart n I honestly can't see myself wanting to live if he ends our relationship properly.  I can't live with out him. He's my world and I can't just let him go :/ 
​Help please