Courtney Cox turns 51 today and while she has gone on to many other roles since Friends, she'll always be Monica to us. To celebrate her big day, we decided to take a look back at Monica and Chandler's rollercoaster relationship and why we reckon they're the best couple ever. They're the perfect yin/yang They stay together through ups and down Their love even overcame injury She supports his career decisions... even when they involve Tulsa She accepts his sexual quirks He overcomes his phobia of commitment for her THIS is the moment when he decided to say 'I love you' They both understand the importance of other friendships Their proposal was the sweetest thing ever Verdict? #RelationshipGoals