Sorry, after I wrote all that and hit send, I realised I spent way too much time on our history and not enough time on our "present."
I want to add, quickly, that I believe he is going through a MLC. When he arrived in my country and we were spending those four days together, despite my awkwardness, he was totally pleasant. Literally an hour before he left, I was sitting on his lap and he was telling me he loved me and everything was fine.
A lot of the things he has said since are things like "I feel like we're not in love anymore," "I just want to be alone right now," "I just feel like we'll be happier this way," "I just want to be happy," etc. The list goes on.
I don't feel like I am giving all the information that I need to be, but I feel so confused when I realise it's already been 6 months.