Adaptable to a fault
Both signs change shape easily, so you can fit into nearly any situation. Sagittarius is exploratory and speaks freely, Pisces adds a huge imagination, and together they give you the heart of an artist or a poet. You live largely in ideas and ideals. Few combinations dislike petty details and repetitive routine as much as you do.
You’re also close to incapable of holding a grudge. That’s a lovely way to move through life. It’s less lovely when someone keeps doing the same hurtful thing and you keep starting fresh, so it’s worth asking now and then if forgiving has become a way of not looking.
In love with the possibility
Your romantic imagination is generous. You see who someone could be and you fall for that person, sometimes well before the actual one has shown up. You give freely, you feel other people’s moods as if they were your own, and you can be wonderfully kind and funny about it.
A partner may end up handling the paperwork, the calendar and the practical side of your plans. Some people like that arrangement. Others come to resent it, and because you dislike conflict you may drift away from the subject before it’s settled. Sagittarius goes off on a trip, Pisces goes off in its head, and nobody’s actually discussed the problem.
Grounding that doesn’t feel like a cage
Pick the two or three practical things that would actually cause trouble if dropped, and make those automatic. Leave the rest flexible. Time alone, with music or water or nothing at all, helps you tell your own feelings from everybody else’s. And when your forgiveness comes quickly, check the facts anyway. You can stay kind and still notice a pattern, and it’s fine to act on what you notice.