The reversed Eight of Pentacles represents the current situation regarding the question asked. The card is associated with feelings of constraint, fear and dissatisfaction. The current situation can be a time of confusion and uncertainty. You may feel blocked or thwarted in your desire to have a long-lasting relationship with someone who is very close to their family.
The Two of Cups represents the obstacle you encounter in your search for a lasting relationship. This card is associated with emotional attraction, love and intimacy. You may have to deal with a sense of insecurity when it comes to getting in touch with your deepest feelings. To overcome the obstacle, you may want to consider exploring your emotional vulnerability and opening up to the people around you.
Finally, the King of Swords represents the advice to follow to achieve your goal. The king represents wisdom and authority, and is associated with making sensible and considered decisions. To be able to have a long-lasting relationship with someone who has strong attachments to their family, you may have to make some difficult but necessary choices to arrive at the desired outcome. This will require a lot of strength and determination, but with enough effort, you can achieve your goal.
The three tarot cards you have selected suggest that you are in a period of confusion and uncertainty about having a lasting relationship with someone who is very attached to their family. The key to overcoming this obstacle is to put aside your emotional insecurity and approach issues wisely and decisively. If you follow this advice, you will be able to achieve your goal and have a lasting relationship with this person.