No a crab man will come back eventually if you mean anything to him, by ex always pops by, at some point and he was a Cancer and so am I, he also knew I was with someone and kept asking his sister, who I am good friends with to let him know when I split up with him, so yeah they are curious and will be back if they really like you.
Did this help you understand your situation?
dxpnet has hosted real conversations like this since 2000. If you value independent communities, you can support the site below.
https://www.dxpnet.com/opinion/relationships/when-cancer-man-say-its-over-is-it-really-over-3669979/