I went to a party and this happened.....(i need help)?

Okay i went to a party and well my best guy friend was there and we dance and like you know we "danced {wink wink}" teenagers you know what i mean. And he backed me against the wall and kissed me..... And i well pulled him im and started makingout with himm. And welll i have a boy friend that ive been dateing for 8 months {long time for a teen.} And should i feel bad? I DO.:( Should i teel him? OH but my best guy friend is ALSO my bf best guy friend. And i asked my bf if i cheated on you with anyone who would you want it to be with? ANd he said "well id want somebody i like, that way it wouldnt be some asshole and he said Seth" {the guy i kissed}.. omg i just completely forgot i had a bf. :( And ive secretly been in love with seth since like 4th grade, and i think he feels the same. :{ actully i know he feels the same. okay thouhgts people?