Denise Richards' Emotional Tribute to Patrick Muldoon on His Birthday

Denise Richards is paying tribute to late friend and ex Patrick Muldoon on his heavenly birthday.

“This was our last hug saying goodbye..... if only I hugged you tighter and longer,” Richards, 55, wrote via Instagram on Monday, September 28, sharing a photo of the pair with their arms around each other outside an aircraft. “We had just gotten off our flight from Scotland .. a whirlwind weekend with our starship troopers family. I loved how excited you were to land at LAX and have fancy PS pick us up & drive us across the tarmac.”

She continued, “Always so humble..we hung out in the lounge waiting for luggage talking about what a fun weekend we all had, I haven't laughed that hard in a long time... we talked about plans of getting together & gave each other a hug and that was the last time.”