my boyfriend wants me to be his therapist (or smth)

Guys I genuinely need your help!!

Ive been together with this guy (lets call him X) for a while now and I can't do this anymore... don't get me wrong I do love him... smh...

In our first 3 months of dating he's been straight up lying abt who he is. Then he had a MAJOR breakdown and I realized he needs psychological help. I'm not kidding y'all it's really bad.... Ive got him there,... glad abt it fr, but the thing is that no matter what I do, he keeps questioning me and makes everything what I say about himself. Iam sooo going crazy y'all. 

Yesterday he was on the balcony smoking a cig and talking with his friend on the phone and I went out to ask him wsp. He said "I'm on the phone" so I said "alrighttt bet" and went inside closing the door behind me. Now let me tell you... THE WHOLE DAY went by with him acting weird towards me and when I asked him wsp he went on a walk just to ignore me. At 00:40 am when we were laying in bed cuz I had to get up at 5am he told me finally. He said he didn't understand why I closed the door behind me when I went inside after asking him abt the phone call.... like bruh. He's been doing shit like that nonstop and if I don't help he's gonna run away and do smth bad to himself. 

I love him y'all he's been great for first months but this is too much... considering the fact I JUST moved 4h away from my childhood home and iam currently writing my first essay for Uni.... AND iam also not mentally stable likeeeeee IAM STRESSINGGGG. 

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The problem is iam scared of leaving him. Normally I would cuz iam genuinely a really independent person! It's just that he was the first person after the loml x-x that I could genuinely think of living my life with. That till death type shit yk. I never even THOUGHT I'll experience that ever again. I can't loose this but iam also too weak to keep this up. 

WTF should I do please help meeeeee!!!!