Trista

Trista is a girl and supporting character in the series who met Greg and Rowley at the end of The Last Straw. They took her to Rowley's dad's Country Club in Dog Days. In Dog Days, she went to the country club with Greg and Rowley but within five minutes, she met a life guard, hung out with him for the rest of the time, and forgot all about Greg and Rowley. It is another one of those times where Greg fails to get a girl to like him. It is also confirmed that she will be Greg's girlfriend in the Ugly Truth, but Holly might also be in the Ugly Truth, in which case would be very awkward for Greg.