What i should do i was confused and kiss him is a incest too ?

I was in a romantic relationship with my own older brother lately, we was so close and we often to hangout together (not a date), but everything change after i comes to his boarding house to ask him for help to Doing my college assignments. At first we just have a chat, joke and everything is normal but when i want to go home the rain is coming. He told me that i will get sick if i going home and got caught in the rain. So i decided to stay on his place and watch some of film on my laptop. We was so close and i notice that he was try to seduce me with his jokes, i notice that he wrap his arm around me and moves closer his head on my neck. And seconds after we kissing i refuse him to continue this act any longer

I was so confuse and have a mixed feelings about that, until now he was try to call or just massage me. But i only give him a short text, i have a feeling deep down because i was Comfortable but he was my own brother, what should i do ?

I was looking some of the article or a group on the internet and i glad i found this forum.

(SORRY FOR MY BAD ENGLISH)