Series 3, Episode 3

S3 E3: Rachel and Adam undergo their first treatment, but the chances of success are not good. As Pete begins an ill-starred relationship with Ramona, David is becoming more and more attracted to Jessica. To Karen's surprise, David plans a proper 40th birthday party - a fancy dress party! But how will the estranged partners cope when they're confronted by the new members of the group? And why has no-one bought a present for David....?