Majority of people seem normal at first lol. I'm just kiddin around but seriously be extra careful with a neighbor since if things dont work out he lives in such closw proximity.
Also all the cancers I had liked to move the relationship along very quickly. It was flattering at first until I saw the trend that they moved things fast to get a commitment from me before I could see them for who they really were.
Watch for signs of depression. They tend to pull away for a few days to hide it but it can only be hidden but so long. When they are upset there is nothing you can say to calm them down. Everything is your fault & you are 100% guilty of whatever foul deed they accuse you of. Also Ive found them to emotionally abusive & very mean when they get in one of those horrible moods.
The horrible mood starts off happening maybe once a month. With time it becomes once a week. And it can last for days at a time. Mad, angry, volatile, silent treatment, mean & all for no appearant reason. It just pops up out the blue.
But I'm not a water sign so I couldnt take it, another Cancer, a scorpio or pisces probably understand how to deal with them. Being in a relationship with that sort of Cancer makes me feel ill, literally. I'm a libra. I need things light easy and breezy.
But for me they make great guy friends.
.
And I say this as a Cancer woman. 
