New Feeling On Valentine's Day

On February 14th I had gotten a new feeling. My friend Nick had asked me to be his girlfriend. Well he had already has a girlfriend. He asked what should be done to his girlfriend. I told him I don't really know. Nick told me that all three of us can be friends but we are dating. I was ok with that. I haven't told any one that we are going out yet. And I am afraid too.