Do you think it's selfish to break up with someone because you're unhappy?

I've been with my current boyfriend for about 4 months now. I really care about him but I am unhappy. I've talked with him about it, but he just doesn't care. I've been thinking about breaking up with him if he doesn't start putting more into our relationship. I was told that it is extremely selfish for me to break up with him just because I'm unhappy. Do you think its selfish?

Do you think its selfish to break up with someone because you're unhappy?
Do you think its selfish to break up with someone because you're unhappy?
Updates
+1 y
UPDATE: I tried talking to him once again, and I got the same "I'm busy with life". I keep blaming myself when I know that this isn't my fault. I gotta do what is right for me even if it hurts.
Do you think it's selfish to break up with someone because you're unhappy?
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