Help please... :)?

hey..ok...soo theres this guy in school that likes me a lot.. &&& i guess u can say i have a little kingarden crush on him.. last week he was flirting with this girl i dont like && he said sorry && i forgave him.. but the other day..he said i had a bad personality & that i am a f***** b******.. he keeps on iming me saying hes sorryy && crapp but idk if i want to forgive him. Everytime he ims me i dont answer.. Should i forgive him or forget him?? were 13 && school ends in 2 days..were going to different high schools, so probably wont see him ever again.. :( please helpp :)