Serious, and silly about it
You’re one of the most light-hearted Cancer Suns, with a playful, slightly devilish wit. It isn’t shallow. You’re a serious person who’s discovered that a good joke makes hard things easier to look at. Your Moon goes to words for comfort, so learning, reading, talking and staying mentally flexible are how you feel safe. Having lots of ideas to hand is your version of having a full cupboard.
You can also, for a while, turn your feelings off. Most Cancer Suns can’t do that, and it can be very useful in an emergency.
A bit of a paradox
Your Sun needs real closeness and your Moon wants to chat and move on. You may be yearning to be understood while acting as if nothing much matters. A partner gets a stream of funny texts and might not realize that you’ve been hurt for a week. When they finally ask, you might give them a clever answer, and then feel let down that they believed it.
Someone who can keep up with your mind is a big attraction. If they can make you laugh and also spot when you’ve gone quiet in a particular way, you may never want to leave.
Telling them where the switch is
Let people in on the trick. “When I joke about this, it’s usually because it matters” gives a partner a way to find you. Try writing down what you feel before you talk about it, because your Moon can often find words on paper that it won’t say out loud. Then watch for the moment when you’re about to change the subject, and stay on it for one more sentence. That’s where the closeness you want tends to begin.