I want to reach out but don’t want to be weird?

Ok so I have a coworker who I found out just left the job and we were getting kind of close and he invited me to an lgbt art festival next month and briefly told me about it and I had gotten his number and he told me just to shoot him a text saying it was me. I never did because I didn’t get around to it but we weren’t super close but have talked a lot at work and I still want to go to the festival next month and he said he would send me a flier and stuff and to just call him up when I was there. He didn’t tell me he was quitting ( to be fair I don’t see him that often and it was prob last minute for him ) I work evenings and he works during the day so our paths will occasionally cross although sometimes we would get to talk more when I was covering on certain days and working a full day. So should I send him a text about him quitting because I never texted him. How do I stay in contact without being weird lol or should I at all. I’m a girl by the way and he’s a gay guy.
Updates
+1 y
Update: already did it and it worked! He actually called me the other day and we spoke on the phone.
I want to reach out but don’t want to be weird?
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