Saying girls are just used to guys hitting on them is putting them in a separate category saying they are better than you. They are being distant for a reason that probably has nothing to do with you. I get that you want her to engage with you. occasionally life just makes you not want to deal with people. I do get that some guys are weird in how they are flirty and I get that some females can be overly sensitive to what a guy says. Life is a crapshoot if you're trying to be fun and friendly at least your trying. Keep up the good work!