You can just love someone with about anything if cupid catches you. But most important aspect for me would be personality.
Both, but there needs to be physical attraction as well otherwise even if you just love the person's character then they will just be a good friend IMO.
For me i will go for His/her character . I have seen many guys those don't know how to treat others and than they expect respect for themselves .
you can't know ...you heart tell you she is the one ...just like that how you can make sure from just this thing ...very easy you just spoken to her and go ..but you miss her
being attracted to someone at first is a chemical reaction, which makes me want to get to know them and hopefully enjoy their inner beauty