What does this mean?

To be honest from what you've said it sounds like that guy is messed up. I'm a guy (just so you know) and I personally feel really embarrassed because it seems like it''s always guys who do that sort of thing. I won't tell you to dump him but that's twice now and he's doing it so unashamedly, and when you do it (or appear to anyway) he gets mad, that's just double standards, imagine going forward in life with that constantly. Thats my take on it. Hope it helps

Pretty straightforward, break up (if you've not already and not very clear) and go no contact. No point wasting energy on him or trying to fathom his motivations.

Honestly, it doesn't sound like a healthy relationship for you to be in at all. It's hugely damaging on your self-worth and general mental health to be treated the way you've described. If he cannot cope with the long-distance, it's not your responsibility. For your own health and happiness, you should end the relationship and move on (I know it's hard, but it's better in the long-run, trust me!).

If you're worried about his mental health, maybe you could reach out to one of his family members or his university. If he threatens to hurt himself, do not react to this - just call the police in his area and explain that you are concerned for his wellbeing and outline the situation. I understand it being an incredibly awkward and stressful situation for you to be in, but it's important that you always put yourself first. You clearly have not entered into a mutually open relationship, so you do not have to put up with being cheated on and you have absolutely no responsibility to forgive him and move on. You are absolutely entitled to feel upset, hurt and confused. Please don't let him carry on treating you like this. Nobody deserves to be cheated on!

It's also unhealthy for you to do "tests" like posting a picture of you and another boy, it'll only serve to mess with your head more in the long term. His reaction to this also shows how little regard he has for anyone but himself because he demands emotional validation from you when he feels threatened in the relationship, but sees no issue with openly telling you that he has no respect for you by flirting with other girls and requesting a FWB relationship with someone else. You should get out of this relationship before it makes you feel any worse!

You're right, it's not a healthy relationship at all, Maybe in a way, I know that already but I just remember the good memories we have and hope for the best that he will try to change and stop with all of this. I just find it a little strange that he does all of that to me but when he feels like the relationship is going a bad way for example, me blocking him because of what he's done and he find out he is blocked, he get really angry and tries to make it work like calling me everyday but then this goes away after a while and then he starts back again doing those crazy things only for me to do something and get angry that he does those things and then he tries again to make it up to me. I can feel that he tries sometimes but then it just disappears and then it goes around in circles like that. I mean if he gets angry when he feels the relationship is coming to end and tries to desperately to save it, that must mean that he does care and doesn't want it to end, but it doesn't explain the constant lying, cheating and disrespect over and over again.

But hearing your words does make alot sense. He really doesn't respect me at all if he keep doing those things as if he doesn't care how much he hurts me. So it really is for the best to just end it. Thank you, I appreciate your advice alot.