Pisces is one of the most sensitive signs of the Zodiac, so you cry easier and wear your emotions on your sleeve.
That's not a bad thing. It just means that you may need more forward-thinking awareness than other signs when it comes to draining people.
Since you're a giver by nature, you may find that a periodic break when one of you expects too much, or makes unrealistic demands can help.
A bit of space restores your balance and wholeness. Preserving your individual needs (which you need, especially) for solitude, rest and reflection is part of the deal.
Pisces needs to attend to their own needs, without feeling guilty nor coming on too strong.