The other thing about these two lovebirds is that they often create a toxic, co-dependent environment together. However, they remain unable to make any real commitments to a life together. They're the type of couple who will somehow end up spending 20 years in their relationship, while somehow never building anything solid together. Some of their friends may not even take their partnership very seriously.
Pisces can occasionally annoy Sagittarius by being a little too clingy at times. They crave comfort and security from their partner, and independent, sometimes-brash Sagittarius can be a bit neglectful when they don't provide it. Both need to work on their own individual problems, but it inevitably ends up destroying their relationship. We wish these two could just get it together, but it's unlikely that either party will step up and take their partnership to the next level.