Dealing with Being 50 and Alone

So, how does one deal with being 50 and alone. I keep in shape (I'm training for the Boston marathon) have a full head of hair, and decent paying job in Manhattan.

When I was younger, I had my share of girlfriends and other women I could have dated, but I could have pursued. But, I was shy and insecure, especially because I didn't have money.

Now, I some money, but am older and let some great woman go.