loool. It's not just you. Trust. Anything along the line of:-
Sweet Cheeks, babe, baby, bb, love, sweetie makes me just not want to accept the booking.

Not sure what it is to be honest. Probaly cuz I feel as though those are words you use when you feel affection for someone, not someone you have to pay to sleep with you. My bf calls me that cuz he loves me. when a punter does it its sickening. Just imagining some smelly fat ugly old man calling you baby. ewww

And for the tehehehe at the end of the email. WTF? what grown man types that lolz. You have to wonder if he is mentally slow.
Don't know why they do it. Perhaps they think we'd be flattered? But nah. it's similar to an ugly guy chatting you up. Just 3 times worse.