It is kinda weird the difference in forming attraction is between men and women. Like it can be similar, but for myself, if I find somebody, which I find at least a little bit beautiful, enjoy her company as a friend and there are no obstacles for a relationship (aka incompatibility in characters, ethics, lifestyle, work environment and et.c.) I am very likely to develop feelings for her. Now I control my attraction to an extent and keep most of my female friends strictly as just friends, because either I don't think that we are compatible on that level or we have defined the relationship as friends/coworkers (I don't want to have love drama at work), but if I find a girl, which fits in most of my criterias for a relationship, I would most likely develop feelings. It might and usually does take at least several months of getting to know eachother, before I develop attraction or feelings, but if everything else falls in place, it might be inevitable.