If you can get a Sagittarius to commit, they love big and loud if they do. Ash says that this sign, which is known for being bold and fiery, "is more likely to have multiple love affairs at once than a single soulmate. It's not that a Sagittarius can't fall in love; it's that they have trouble putting all of their romantic, passionate, and mushy energy on just one person." As soon as things start to feel stagnant, they move on to the next." The key to keeping a Sagittarius's love? "Be flexible, act on the spur of the moment, and make sure your passport is always up to date.