In consideration of Saturn, we need to consider the aspects it holds, as well as its house position and sign. In Cancer, there can be karmic implications within the family that need to be worked out, which can interfere with the ability to make harmonious marital partnerships.
Note that Saturn sits between the Moon and Venus, which are also significant energies involved in forming relationships; thus it can provide either a stabilising, or restricting influence in a committed relationship. Your karmic imprint has to do with working through negative family themes in order to prevent them from repeating in your romantic / marital relationships.
Saturn holds rulership over your ASC, so the attempt to balance your personal self expression in partnership may have its trials or setbacks. You may find yourself being vulnerable to being dominated by a partner, or finding yourself in an abusive relationship, thus for you it is important to develop your own sense of security and confidence without relying on a partner to provide for you.
As a Capricorn rising, the family dynamic is still highlighted as the underlying basis in forming marital relationships, where the expectation is for responsibility and the provision of security. In its best expression, Capricorn as a personality can come across as hard working, dependable and reliable.
The connection with Mars is considered a positive one by the trine aspect, although Mars is at a critical degree, indicating a potential for excessive worry and changeable plans. At the same time there can be undue hesitation in making decisions. Mars in Pisces can typically be highly intuitive and sensitive, and longing for understanding and acceptance by a partner.
With Saturn, Moon and Lilith posited in your 7th H, marriage may well be delayed until you have developed enough self awareness and understanding before making a commitment; or on the contrary marriage with the right partner could help lead you to greater spirituality within yourself.
Namaste.