Colby goes to a party and thinks he meets his forever girl, But after she gives birth she doesn't want the kid and leaves Colby all alone. Him being only 21 in LA and a single parent wasn't the best but he knew his friends would always be there for him no matter what. Lizzy (his daughter) being now only 4 years old still has no clue about who her mother was. She never will because she had committed suicide.... Colby was very upset but not as much as you think. Later on when moved into the trap house Katrina shows him a friend of hers and he didn't want to be believe it he fell for her hoping that she felt the same and this girl would be the one.