He says he loves me but gets scared to meet up?

I'm very confused and don't know if it's me being a fool, or if I've done something wrong, or if it's him.

I (female 43) have a friend (male 44) who I've been friends with for 24 years. 3 weeks ago, via text, he told me he loves me, always has done and wants to date me (even mentioned marriage). We're both currently single. He's only ever had one girlfriend, and has been single for the best part of 15 years.

He's always had self-esteem issues and has never really had much confidence around girls.

So, I suggested meeting up to go for and informal "date", meet up, GP see a film, and get something to eat. Initially he said yes, he'd love to do that, and we picked a film we both really wanted to see and set the day. But, as it got closer, he stopped responding to me. This was just over a week ago now, and I left it as I dodn't want to pester him or seen to chasing him. I've not heard from him since.

Lovely guys out there, please help me to understand what's going on. Any ideas why he's stopped talking to me suddenly? Was it me forcing the met up?

He says he loves me but gets scared to meet up?
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