Is this wrong what I am feeling?

I have never been with a girl before, so I don’t know if I am a lesbian. I don’t feel an attraction to guys, as I do with girls. When I see a pretty girl, I feel like there are butterflies in my stomach. I have dated guys in the past and tried to make it work, because I was taught that and I would get married and have kids with my husband one day.  In the end I broke up with each guy, because I wasn’t attracted. I don’t know if I just haven’t met the right guy or it’s me. I’m only eighteen, and know my emotions can become haywire, but I never grew up liking guys I didn’t see it like other girls getting married in a church and swept off my feet. I haven’t told anyone yet about these feelings and it’s killing me inside, because I don’t know what to say and what I should do. I’m scared of what might happen if I out myself. I’m friends with a lesbian couple at my school, and they go through a lot of harassment from classmates and trouble from their parents.  No one knows of these feelings that I like girls, because I don’t let it show.  It’s getting a lot harder, because I think I am in love with my best friend. I always thought she was pretty, and I love to spend time with her. I try to keep a distance from her and hangout with other friends, but it’s not the same. I spend most of my time with her, and she does the same. She is always there for me, and I am there for here. She can affect my emotions so much. She doesn’t date guys anymore, because she says there aren’t any cute guys at our school. I said it long before her, but now she says the same thing. I feel like I’m getting signs from her, but I could never ruin our friendship. She says she loves me,  but I take it as a friend way. She always touches me in certain ways that ignites my body on fire. This was almost my breaking point. The other day I was at her house watching TV, and I told her one of my friends said I was gay and asked if I liked girls, since I didn’t date guys. She started laughing and asked me what I said. I told her I punched the guy. She said that I should have told him I was gay and with her. She smiles and then walks away from me! I follow her and she starts talking about something else. I let it go. We are on her bed and she starts comparing her trophies to the ones I have in my room. I tell her I’ll count to five for her to stop, before I make her. I start to wrestle her playfully, and we are both laughing. I get the upper hand and I’m lying on top of her. My face is so close to hers. I want nothing else but to kiss her, but I pull back and my phone rings. I leave after that, and I haven’t seen her since, because I need space and I don’t know what to do. I need help please!! Should I come out to people? Should I tell my best friend I like her more than a friend? Please Reply