Hmm well without turning it into what
@Spangle said, and presuming this is a serious question- probably much older as my sexuality was a little more confusing to figure out. It wasn't until my teenage years I realised not everyone was seriously attracted to both males and females and that was because girls would flirt and make out with me to get the attention of guys- talk about confusing. It wasn't until older still I realised that I was attracted to everything in between on the scale and more, which gave me an incredible guilt complex for many years not understanding myself or being able to find anyone to talk to about it without feeling very embarrassed at what they might think. I don't think I really accepted my pansexuality till my mid 20s, and it's still a preference that is very misunderstood. I've never really felt like I fit in anywhere.... except here with you dirty bitches!