Jura is exactly right.
There is a term you should learn in English: ‘passive-aggressive’.
‘Aggressive’ you know, like ‘aggression’. Not just acts of violence but any strong move, good or bad, is aggressive. A carpenter must work aggressively to hammer a nail. Or the hammer can be a weapon- aggressiveness is like strength, it can be used for good or evil.
‘passive’ is the opposite of ‘active’. It means submissive.
So ‘passive-aggressive’ means behavior which acts passively but works aggressively.
For example, we have the same joke in many countries:
Q: How many Japanese mother-in-laws (or Jewish mothers, or grand ladies of the old American South, etc etc) does it take to change a light bulb?
A: None! “I’ll just sit here in the dark by myself. Go ahead and have fun with your friends…”
OK, here is another example. Look at these assumptions.
I am a good person.
A good person is faithful.
A faithful person would love you forever.
Therefore, if I want to leave you, it must be your fault, not mine.
“So… I would love you forever, of course, but you have made me leave, because the sky is blue. It’s YOUR fault, not mine!”
Surely a boy who uses such childish games against you is no man.
Did you fall in love with his cruelty, his cowardice? No? Then you did not fall in love with him, only what you hoped for him. But your estimation of him was wrong. Perhaps he flattered you by paying attention to you.
When we fall in love, it is easy to feel connected. So then it feels strange and hurtful, as though to be separated were like losing part of yourself, even your heart. But you have only lost your hopes.
True lovers are first ready to sacrifice themselves for the other. “Maybe it was I who was wrong, maybe you were right and anyway I will always meet you halfway (at least!) because I love you.”
If he won’t do that, he’s not worth bothering about.