Don is asked to be the best man at his old school friend's wedding.

Disaster ensues when a posh girl invites Don and Jason to her parents' country house.

Don thinks he might be a bit gay after Samantha's brother gets into bed with him.

Don joins a gym, but fails to get beyond the running machine without passing out.

Don comes up with an elaborate story about a new job to try to impress Sam.

Don meets a homeless girl begging for money in the street and asks her out on a date.

Don realises he still has feelings for Sam after hearing of Brian's intention to propose.

After seeing the attention Eddie gets in his theatre club, Don decides to join up.

Don feels his age when he hangs out with a girl who is nine years younger than him.

Don discovers he's been left a house by his recently deceased grandmother.

Don goes on a field trip with Abby and the kids from her school, but things go wrong.

A night out on the pull with Eddie ends in all sorts of drama for Don.

Don finds out he's legally obliged to put on a wake for his deceased nan.

Don gets a new job working at Karl's dad's company and finds the father he never had.

With Abby gone for six months, Don wants a stripper to move into the spare room.

Don starts dating an older woman but can't handle the grown-up world she lives in.

Samantha's singer-songwriter boyfriend Jackson invites Don to play at his open mic night.

Don's new relationship with Jenny is soon affected by her odd behaviour.

When the gang mistakenly believe Don might be seriously ill, he continues the lie.