All of these signs are compatible. Your Leo moon and his Aries moon are both fun loving and creative. Libra and Aquarius are both air signs, so you have a strong mental connection, too. Aquarius people do erratic things which only make sense to them. They do need more freedom than most and don't really like to settle down. I think it can still work if you can talk about his need for freedom and set some boundaries, or at least find out if it's you he needs the break from. It could be something different. But talk, and if he leaves again, then I would say no - it's a pattern we don't want to see. Let me know how it goes.