Do u think its wrong to have with your twin brother??

I have an identical twin who is 14 years old and we like to have . We .. well cos we wouldn't get std's from each other. Well it all started a couple of moths ago when i went in one day into the shower and my bro was jerkin off and then we just jerkin. And make in out and it just took off from there. And now my bro puts down intrest in women on facebook. Well we have never talked about gay and stuff like that. And i dont know what to do cos last week he didn't wanna do it. So i kinda got him drunk and we had again. Should i confront him about being gay. I dont know what to do.. do u think its wrong???