Watch NCIS S06E (8)

In "The Launch Acceleration", Penny suggested that they move up their relationship; however, Leonard ruins the mood when he asks her to marry him during intimacy. They later meet and Penny, unlike their first split, managed to reject his proposal and still stay in a relationship with him. During "The Countdown Reflection," they watch Howard's space launch while holding hands to comfort each other.

Watch NCIS S06E (8)

In "The 43 Peculiarity", Penny is working with a British fellow student named Cole on an oral class project. Leonard is jealous so he follows him down the apartment stairs and tells him to watch out for "Penny's boyfriend" since he is a gang member. Penny is upset with Leonard and the two later meet in the hallway and have an argument. Penny tells him that she cannot believe that he does not trust her and that he embarrassed her in front of Cole who knew who he was since his picture is on her refrigerator. Penny continues to tell him that he is the one she is with and unwittingly mentions that he knows that she loves him. Leonard is stunned and tells her that that is the first time she ever said that she loves him. He then interprets her stunned reaction and asks if they aren't going to make a big deal about her confession. She agrees and runs off to cry.

In "The Bon Voyage Reaction", Leonard takes a job working on a Stephen Hawking expedition in the North Sea for four months over the summer. Penny will miss him but knows that it is a good opportunity and sends him off. At the airport, she is fussing over him like his wife sending him off on a business trip. She also has to watch Sheldon over the summer, too.

In "The Matrimonial Momentum", Leonard and Penny are at a wedding chapel and decide on their wedding package, which includes a live stream that allows their friends to watch from home. In the chapel, the minister asks Leonard and Penny if they had prepared vows. To Penny's surprise, Leonard has. He says that they are made from atoms that have travelled over 14 billion years to create them so they can come together as a couple and make each other whole, which overwhelms Penny. Penny sweetly says that he is the love of her life and her best friend and improvises, quoting the lyrics to 'You've Got a Friend in Me' from the Disney film "Toy Story". The minister asks if that was from "Toy Story." Penny says it was and informs him that she quoted the lyrics because he loves them. Leonard gets misty-eyed and confirms that he does. Leonard and Penny are pronounced man and wife. Unfortunately, Stuart and Howard are the only ones remaining who catch it, due to Sheldon insulting Amy, causing her to finally break up with him, causing most of the group to leave. Leonard decides to carry Penny across the threshold into the suite, but huffs and puffs as he carries his wife into the hotel room. They kiss, but Penny still can't stop thinking about Mandy the girl on the boat. Leonard again insists that the kissing wasn't that great, especially since he also chipped her tooth. Penny wants to know if he feels guilty. Leonard jokingly says that he does not feel guilty because the girl had dental insurance. Leonard then adds that he does feel guilty when he sees her every day at work, freezing when he quickly realizes his mistake. Penny is now truly shocked that he never told her this fact. Instead of spending the night in Vegas, they return to their apartments, still fighting. Penny spends the night alone while Leonard spends it with Sheldon.

In "The Separation Oscillation", Leonard finally confronts Mandy, his kissing buddy from the North Sea, about the incident and it doesn't seem to mean much to her. Leonard also realizes that he really was trying to sabotage the relationship. He went and talked with Penny and tells her. She too realizes she has been trying to sabotage their relationship. Leonard then confesses, "I've loved you from the moment we met and I will keep loving you until the end of time." Penny is very touched and tells him that that was the most beautiful thing anyone has ever said to her. He follows with getting down on one knee and asks, "Penny, will you please stay married to me?" and she replies "Oh, damn it. You topped it." She and Leonard kiss and eventually reconcile. They then head into the bedroom to formalize their marriage. Later Sheldon gives them a wedding present - a trip to San Francisco for the three of them. 041b061a72