If you were in the house this year, who would you be hang out with and form genuine friendships with? This is different than the housemates you're supporting...i.e. I'm a Caroline fan because I find her entertaining but if I had to live with her I'd probably detest her guts. This also doesn't have to be confined to one group (you can pick people from both the insiders and the outsiders).
For me, I'd be besties with Lauren and Adam, but have a little bit of a (non-obnoxious) bromance with Luke S. I think I'd probably get on well with Scott too. I like Deana a lot watching her an hour a night, but I'd probably get really annoyed with her living in there all the time
Of evictees, I'd say I'd be good friends with Benedict. Lydia, Chris, Arron and Victoria would all do my nut in