I feel like my best friend doesn't care about me she is always making excuses like the other day I asked what she was doing that day and she said nothing so I asked if she wanted to hang out and she said she was busy, today she said she was going to the gym so she couldn't hang out and she hung out with another person, I am a jealous person I guess you could say but I don't know what to do should I find someone else or what? Please help