You should really sign up for the hip-hop classes at Arillaga. I took one winter quarter of last year and had a great time. The music is awesome, and it's a good way to get a workout without feeling like you're working out. Not to mention it helps lower your stress. I took the class with a friend but ended up knowing tons of other people in the class. A lot of people were there on their own. You are really dancing the whole time with loud music playing, so you can definitely brave it on your own!
Every single hip-hop class I've seen was for solo dancers dancing in a group and not two people partnering up. I think if you are thinking of hip-hop as a partner dance, it may be from those "Dancing With the Stars" type of TV shows. But it's not like that when you take it as a group class.