What do I say to my twin who came out as gay?

My identical twin, who I never expected was gay, came out as gay to me over the FaceTime. I was low key shocked so I kind of didn’t say anything much. I do NOT disapprove. I later called him a few minutes later in private. Told him it he could of came out sooner. Asked him who he told and stuff. Asked him how he’s gonna come out as gay to the family. Joked about him just bringing a guy over unexpectedly. I ended it with saying “Love you, bye!” which isn’t all TOO uncommon for our relationship.

Did I mess up? I had no idea how to react. When I talk to him in person what do I say? It’s just simply he likes men, how do I have a conversation about that?
What do I say to my twin who came out as gay?
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