I need to show my boyfriend more love and attention. What should i do? Any ideas?

my bf &i have had a on &off relationship for 5yrs &he broke up w/me b/c he thought iwas cheating. I begged him to give me a chance evn though i didnt cheat &now we're togethr again. Ineed to show him how much ireally care for and love him. What can i do to prove to him?