Alone?

One thing i'm scared of is that in the future im going to be alone. Not that i wont have friends and family because i will. I can just see myself in the future and not being in a relationship.
Ive never really been in a relationship before, so i dont know what they are like, but i do know that they look appealing and i think it would be nice to have someone care and think about me most of the time rather than it being the other way round. I just want someone that will make me happy all the time without even trying.
Its not too much to ask for is it? 

Hopefully it will come sooner rather than later...