Denise Richards’ daughter, Lola Sheen, is paying tribute to family friend Patrick Muldoon after the actor’s death at age 57. Lola, one of Richards’ daughters with ex-husband Charlie Sheen, shared in her Monday, April 20, Instagram post that she “begged” her mom to get back together with Muldoon. Richards, 55, and Muldoon briefly dated in the 1990s but remained close friends throughout Muldoon’s life. “I thought you were the one that was supposed [to] be in our lives forever. When I think of my childhood, I think of you, Pat, and it’s gonna be so weird to go on without…