MY FRIEND IS TRYING TO STEAL THE GUY IM TALKING TO

so basically i was at a museum yesterday and these (cute) boys were airdropping me their snapchats. i added them and said “who is this” to each. they were all jerks/weirdos EXCEPT for this one guy named joey. i dropped the other dudes and only focused on him. we were talking for a long time yesterday over snapchat and then he said “can you give your friends my snapchat” to which i said “why, so you can flirt with them😏” trying to be all confident and stuff. he said “idk can you?” so i did. i specifically told them to be weird and troll him kind of. my “friend” sarah added him and they started talking but i know that she likes him a little bit. joey lives in pennsylvania and we live in washington so we’ll never see him but she’s still trying to take him from me??? i’m debating on being petty and start talking to her “boyfriend” in cali but i don’t know if it’s too far. what should i do?