I Feel Left Out

I'm 26 years old and I live with my parents and my aunt, uncle and cousin. I'm engaged to the best man in the world, I'm also a student taking up Medical Assistant. With all that I feel left out, when I'm around my own family I feel left out they seem like they have more fun when I'm not at home. They never want to spend time with me when I'm at home. Then when I'm with the fiance it seems like I'm in the way, he doesn't pay that much attention to me like he use to especially since my birthday. I love him, but it hurts that he just acts like I'm just a friend just chilling at his house. I seriously wish that he tells me what he wants from me and then when he takes me home at night it seems like he is happier when he gets back home. I feel so left out with my family and unloved with him. The only time I laugh now is when I'm at school. I just had to vent to get this feeling out. He also claims to have conversation for days but when we on the phone he says nothing, and when I start talking he falls asleep.