I slowly want to breakup...

It seems my boyfriend doesn't love me anymore.

(i'm going to link together these statements, so it is more 'native') 

At night he does not send me goodnight kakao messages and he is not interested in my life.
He even told me that he does not want to see me this week because he has to do his work.  I was so angry that I told him I don't want to see him for 3 weeks.  He acts so individualistic, and yet if I accuse him of this, he corners me and accuses me of being the 'weird' one.  

I thought if he fell in love with me, he would think and care for me, but it seems he doesn't. During the early stages of our relationship, he even kept his ex-gf's pics on his facebook.  I talked to him about these pictures but he didn't remove them.   He even said they give him good feelings.
I was so angry that I burst into tears and told him I want to breakup. It was then that he begged me to stay, and told me that I am his only love.  He said she is out of his life.  I believed it and I feel so stupid now.

He often says that this is normal in Germany (btw he is German ), and that he and I have cultural differences.   I thought that it was universally a sign of respect to clean up ones past love.  I don't know whether I am weird or if he is a bad guy. 

But I don't trust him anymore. 

I am slowly trying to breakup.

I know its quite different to the original!  However I promise you this sounds more natural.  Wonderful start though, your english is very good. I'm correcting it very strictly. :)

Happy studies, and I hope you're ok. xo