You shouldn't keep everything to yourself all of the time. Just like you want to help your friends, they want to help you, too! Now what would you do if they thought keeping their feelings to themselves was best for everyone and they wouldn't let you help them? I'm sure you help them a bunch and since they're your friends, I'm sure they feel the need to help you. That's what friends do! If you feel the need to comfort your friends, in my opinion, I would feel more comfortable if my friends told me how they felt and what's on their mind. That way I could help them to the best of my ability.
Everybody needs somebody. And I'm sure you're that somebody to a lot of people. Nobody can move on from somebody like that, trust me, nobody has moved on from you. You're helpful and smart and just really easy to talk to in general: nobody would NOT want that! So... You worry too much <3 And most of all, NOBODY could EVER hate you! You're just... You're just that kind of person! Like Will Ferrell!! Haha. Nobody would or could or shouuuuld hate you. I know my telling you "Don't worry about it" may not do any good, but if you want a friend's HONEST opinion about how me and all your friends feel about you, I'd say "You're such a worry wart, Nic!! Everybody loves and cares about you more than anything in the world and nothing could change that!!!" Then I'd hug you and smile as big as I can without hurting myself <3333