I need some advice can someone help me..its to do with a boy:/ ?

Basicaly :S i was going out with this lad and it didnt work out so then he dumped me , this was in may.. & i still like him. i went to this party last week and he was all over me.. then he wanted to finger me:/ i kno he doesnt like me i spoke to him about it. but he was wantting to do that and i sed thats all he wanted and then he got up and walked away , i then pulled this other lad and he got pissy with me. but yeah & theres another party soon. im just wondering what would you do.. would you let him do it ?? thanks ox #