would love some honest thoughts and advice (first post)

hi; so i'll preface this by saying about a month ago my boyfriend (my first relationship) broke up with me - i was very upset, but i guess it made sense because things had been a little rough recently, he felt like we had been doing things my way and was frustrated that i couldn't give him more certainty (ie i was uncertain about telling my parents about us - i do not have a great relationship with my parents which he knew)

Anyway, with the breakup he framed it through the lens of staying friends and i didn't understand why he wanted 'space' away from me - he described as a few months before getting back in contact - because he said he cared abt me and would be there for me. i reached out to him a couple weeks ago, and we argued a bit because i was upset but i thought we ended things on ok terms and would still be friends in the future. fast forward to last night i look on Instagram and he suddenly removed me as a follower and stopped following me, implying he doesn't want to speak to me again. I'm hurt and confused, because we were so close and vulnerable for almost a year and given how i thought we ended things ok i don't get why he now wants to be strangers.

before that earlier this year I had another person I was very close to say they thought it would be better if we stopped talking - and I've had quite a few very close friends go on the same trajectory over the last few years.

so here's my question - am i the problem here? Because I'm the only common denominator and i feel like when i get hurt i become childish and see things in black and white - framing the person who hurt me as 'the bad' when its not that simple.

I would love some honest thoughts because i don't know.

Also, there's someone else I'm beginning to get interested in; but i feel like its only a matter of time before I do something shitty, like if they want a relationship but I'm more interested in being open and exploring - I've told them that i don't know where things could head but I'm still scared i am going to hurt them.

I'm very emotional and feel awful at the moment - very hurt, upset and a bit sick to the stomach. i have my final exams in a few days so any advice on getting over that would also be nice.