Digging back through old threads here, but since you never got a serious answer:
I was having a conversation with two of my close friends back in college, and I said that I felt unattractive because my sex life was really dry at that time and no one ever flirted with me. They told me to shut the fuck up "because I'm gorgeous". I remember saying: "Wait... really?" and they both started corroborating with each other.
It took me a while to make sense of it, but eventually I realized that the reason I couldn't tell if someone was flirting with me was because it happened on a daily basis. I was so acclimated that I couldn't even tell! Looking back it was really overt, but I was completely oblivious:
Honestly, it kinda gets to the point where I can get a bit too manhandled and get sick of it... but the attention is admittedly really enjoyable.