Haynes and celebrity florist Jeff Leatham are set to wed at the end of the month. Haynes teased ET with some last-minute wedding details and his Halloween costume plans.
The 'American Horror Story: Cult' star stepped out for date night with his soon-to-be husband for Tie the Knot's fifth anniversary party at NeueHouse Hollywood. Haynes also spilled some last-minute wedding plans and teased his 2017 Halloween costume.