Whatsapp reaction to message but no response. thoughts?

My partner 37M (sort of) has started to just react to my WhatsApp messages (32F). So when I have sent him a message with the last few turns he just reacts with a heart.

He is currently going through sorting his life out with alcohol and he had pushed me away a few months ago. Then 4 weeks ago he contacted me and we had messaged a bit since. Not like before but I thought things were getting slightly better. I said I would support him while he sorts himself out but we didn't label what we are now.

Then 2 weekends ago he suggested we meet up. Asked twice and then on the day he backed out because he was sick. This was a repeated behaviour before the previous break-up and part of me thinks it was because he was drunk. I didn't take it to heart as I know its not a reflection on me. Any thoughts about just reacting to messages. Is it just because he has no more interest? I don't text every day or anything like before. Maybe every 2 or 3 days so that he knows he is supported but not overwhelmed etc.

Any thoughts?

Whatsapp reaction to message but no response. thoughts?
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