how do i do it

Guys im 19 and i literally dated my bf for 5 years. we started dating since middle school, but every thing just went down ... so many things changed and the love and happiness is not there anymore 😰. I know is time to end it . how do i end it without feeling guilty of wanting to move on... please how do i move on and forget him. i love him so much , and im just scared that i will never be able to get away from him even though he makes me feel like shit... please help