Should I stop being friends with my close friend?

I wouldn’t call them my best friend because i don’t have a best friend but lately i’ve been spending more time focusing on myself and i told them this. however they’ve just been very distant lately and excludes me from social events. Or would tell other friends stuff but not me. Does that make me jealous or am i overthinking it? They hang out with this other friend way more than me and doesn’t try and have a conversation except for saying hi to me. Am i the problem? should i try and talk to them?
Should I stop being friends with my close friend?
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