Summer 18’ in Sophomore year

So there is 5 days till i gotta go to school. during this summer i managed to loose my virginity to a 19 year old who visited from another country and get a different boyfriend a week later. trust me i am not a slut.... the guy… lets call him G, he constantly asked for nudes and i am not about that life. my new boyfriend, Z, is much sweeter and i like him much more than G. we’ve been dating for more than a month now and in that time he informed me that he has a foot tumor and that he is a virgin. right now he is in the hospital getting tested. i know he’s been going through a lot because he went to his best friends funeral yesterday. He told me that she killed herself. i know that he needs me right now but something else happened today that i hope doesn’t change anything between us. a guy, N, Dmed me and starting telling me that he wanna be with me. i told him that i had a boyfriend and that i wasn’t planning on leaving him any time soon. he said that i better cheat on Z then and i said no because he need me more then ever right now. N told me that in the past 2 months 6 members of his family died and that he also needed me. i told him that if he really wanted to be with me he would wait. so he told me that he wouldnt wait a lot and that he deserved me because he knew me longer than Z. the thing is before i knew Z or anything, N dmed me and asked me for nudes and i said no because as i said before i do not like sending or receiving nudes and after i said no he stopped talking to me. i honestly have no idea what to do and that’s why i decided to make this entry public. i need advice. i know this sounds like stupid teenage stuff but i dont want anyone to be hurt .