Kinda Like Blog Crushes, but Over the Phone

I have a client who has a little crush on me. We've never met in person, but any time anything happens, he calls me. I'm not his sales rep or his technician. I'm the chick who answers the phones (and I do a little more). It's really funny, because this client's boss can call mad as anything, screaming and yelling, but then my client will call later and tell me that everything was wonderful and great. I've called him and heard the annoyance in his voice when he answers the phone, and have it change the minute I say who I am. He calls me just to thank me for doing whatever it is he requests. And now, I got an email from him, about five seconds after I sent him the information he needed, telling me that I'm the best. It's nice to be appreciated.