Should I be honest with him?

I have known him for 10 years as we’re friends and work together sometimes. Recently we have decided we want to explore our relationship and see where it may lead maybe it turning into something romantic. I am seeing him this week and today I have been really anxious ( I started suffering with anxiety pretty badly this year & his aware I have but I haven’t spoken much about it ) and I didn’t mean to but Iv ghosted him all day earlier he asked how I was doing today and I just blanked the message. I get anxious about things that haven’t even happened yet and I’m anxious that he might be using me or that he might hurt me. What should I do or say?

Should I be honest with him?
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