It's great to have such supportive friends! You cannot thank your gay friend enough for introducing you to her, she was a real eye opener... amongst other things!
"It's not Gay Right?"...
When your GF told you she thought he'd hit on you, you just laughed. Honey, what did you think would happen? I'm not gay! He found it funny, that's all... Then you texted him to make sure he does NOT tell her anything... and to also arrange your next meetup!