I need honest opinion

There's been a girl that I've honestly fell in love on first sight roughly 3 months ago. We became pretty attached but it was hard since the brother wasn't supposed to know and her mother supposedly doesn't like me much, guess cus of the age difference. We really didn't see each other much but we always kept in touch through texting.We went on a date and had a really good time and it felt like we gotten closer since then,2 weeks ago we were getting pretty intimate and spilling feelings all over the place. The thing is she moved after Xmas and I was invited to her house twice but I didn't hang with her when I was over there on both occasions. The first one she was with her sister watching movies while I was with the brother and a mutual friend smoking in the other room and I didn't want to separate the time she was spending with her sister and not to make the brother feel angry. The second occasion is that she had a little get together and i wasn't even invited by her herself. Her friends are all guys,not gonna lie I did get some type of jealousy so I stayed with the mutual friend and the brother again but I understand there's girls that have more guy friends cus they don't get along with chicks. I thought the smart thing to do was not show my jealousy so I sheltered my self from the situation. Before I left I held her and asked what she was gonna do the following day,she said "idk nothing,ill hit you up" she doesn't so I text her and shes waiting for "her boy" in some other town. It could be me misunderstanding or she just got bored of me in a instant? I dont know just seemed very weird before she left.