Boyfriend isn't giving me enough attention, should I dump him?

When I first started seeing my boyfriend he was romantic: always called me, texted me sweet messages, always wanted to hang out with me. For the last two weeks or so, he hasn't made too much of an effort to talk to me. I feel like I always initiate the conversations with him or ask him to hang out. He always agrees to hang out with me so that's a good thing. every time he tells me he'll call me back he never does and he excuse is because he "forgot". I understand that he has friends and so do I. I like to hang out with my friends, but I always make time for him. I am now getting the feeling that he's not that into me and I plan on breaking up with him. Should I give him a warning or just break up with him?
Boyfriend isn't giving me enough attention, should I dump him?
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