Boyfriends twin brother likes me, advice?

xXxShawnaxXx
My Boyfriend is a twin and I get along really well with his brother and mother. We have been together for about three years and I love him very much but recently while talking to his brother he told me about something that he had developed feelings for me and when I asked how long he’s felt that way about me he said for the last year or so.

I really had no idea and I told him I love his brother very much and I’m not going to see him as anything more than a friend. Now it wasn’t a problem until this morning I was talking to their mother about something on the TV when my boyfriend came in and sat next to me. He gave me a little kiss and his brother stormed out of the room and slammed the door. As you can tell he’s angry with me and my boyfriend has no idea what's going on.

What should I do?

Boyfriends twin brother likes me, advice?
3 Opinion