Was she just "using" me?, Second question is also included. Options

[njdc]

Well, I'm new here! I'm Nick and I need advice on something. Okay. Me and this girl are really good friends. We dated for a month or two before she dumped me for my best friend, Jose. A month into their dating, and school is over, Jose doesn't talk to her anymore. Doesn't contact her. So I'm there to fufill the position as the guy best friend. I was dating someone then. We got really close in a few weeks and we were always talking to each other. Then, even though I wouldn't admit it, I had feelings for this girl. I didn't want to hurt my girlfriend so I kept it a secret for a while.

I told my best friend, Chelle, about my feelings and she said she'll ask if the girl I liked had any feelings for me. She said she could date one guy but have a small crush on someone else. She told me she DID have feelings for me. We confronted each other about it and everyone tried to seperate us from talking to each other because they were real good friends with Jose, her boyfriend, and good friends with MY girlfriend. But that only brought us closer. We started saying "I love you" and all that but we were still attached to our current partners. I broke up with my girlfriend because I couldn't lie to her anymore and I found out that she was just dating me because she didn't want to get hurt so she took the safe way, even though she didn't have any feelings for me.

I found out that she STARTED having feelings for me and I felt really bad, but back to the subject. I turned my attention, full on, on the girl I loved. She said she was going to break up with Jose soon because she really loved me. They broke up two nights later and I asked her out, thinking it would be okay. She said yes and we were all happy smiles. Tomorrow, I was talking to her early morning and she seemed distracted. Then she said she had to go. When she came back at night, she said she needed a "break" from dating. We were only together for a day when we said we loved each other so much for two weeks before.

I told my friends to ask why she broke up with me and my brother said that she needed a break from dating. But the bad part is that when he asked if she wants Jose back, she said yes. That confirmed my suspicions. A few weeks ago, when we were still with our partners, when we talked, we talked so much but when her boyfriend went online, she stopped talking to me. I started thinking that she was just using me as a back up boyfriend. Was I right?

*Second question. If it doesn't take you too much time, I need help with another problem. I'm starting to get over ^ her and I started being friends with my friend's friend, Vivian. She has a boyfriend, which happens to be my best friend, and her best friend likes her, which ALSO happens to be my best friend. We were inseperable the past weeks. We were like brother and sister. Except I started having feelings for her. I want to tell her but she loves me in a brotherly way. And my best friends, also her boyfriend and best friend, will beat me up. Should I tell her?