You think my boyfriend has Borderline personality disorder?

My boyfriend has anger issues, one day he says I can’t believe I’m with you I'm going to dump you because we are too different and then the next day he says you are perfect for me I’m happy with you! This sounds more like bpd or bipolar? Why is it more Borderline Personality Disorder? After he breaks up with me he feels upset and cries says he’s sorry then wants to get back with me. I think this is fear of abandonment part of BPD and acts nicer more differently more loving and wants sex more when he’s drunk. He drinks a lot too. What do you think?

This sounds like he definitely has Borderline Personality Disorder
He most likely doesn't have borderline personality disorder but probably has something else.
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You think my boyfriend has Borderline personality disorder?
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