Like Cancer, Leo likes to shower their partners with lavish gifts and simple gestures of thoughtfulness, and this about them makes Cancer fall even more head over heels with them.
Just like any other relationship, this pairing also faces a few problems. Probably one of the most obvious things the two clash about is when Cancer becomes possessiveness and domineering.
Leo, like Cancer, is very independent. They do not like being told what to do, much less anyone prying in on their private time.
Share your own ideas and ask about his. Also observe their body language. If the person is being clear signs that they're not interested, don't waste any more time and just call it a day. Exploit the intellectual.