In the penultimate episode of season 7, The Gorilla Dissolution, she and Leonard become engaged, after Penny realizes that it is not fame she wants out of life, but happiness with Leonard.

Who is Penny Hofstadter dating?

After a post-date disagreement, Penny remains friends with all four guys, becomes an integral part of the Social Group and very good friends with Leonard. In The Hofstadter Isotope, Penny is asked out on a date by Stuart and things end later in the next two episodes after it is revealed she called Stuart Leonard.

Will Leonard and Penny end up together?

Season 9 picks up where the finale of season 8 leaves off, with Penny and Leonard headed to Vegas to get married. Things do get off to a rocky start, after Leonard confesses to a drunken kiss with someone else that Penny didnt know about, but they still get married.