In love with someone else while in relationship?

I’m genuinely not sure what to do…I’ve been dating a guy for nearly a year, and I care about him so so so much. But I think I’m in love with someone else… I’ve tried to stop myself of having these feelings but it’s really hard, it feels so natural 😕 And I feel soooo guilty because I genuinely care about my boyfriend so much. I’m not sure if I should just keep sticking it out hoping that these feelings for the other guy will fade, or if I should leave and possibly someday pursue it…I feel so horrible I don't know any advice would help
In love with someone else while in relationship?
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