All 78 combinations of the zodiac can work.
Yes, a Capricorn and a Leo can fall in love.
Leo has pretty straightforward signs when they like someone. They have a large ego and like to be heard and seen.
When they are interested:
1. They will make their presence known. You will see them, hear from them, and they will touch you.
2. A Leo will try to do everything they can for you. They will try to impress you in a number of ways, so you see them as the best.
3. They may hold back a little if they are unsure if you like them.
4. A high amount of charisma will come from them.
5. Dressing up.
6. Driving fast.
7. Showing that they are confident.
8. They'll become generous.