What is a skill that is a + if you want to start a relationship with that person to you?

Besides the compatibility factor, a healthy mature relationship thrives on mutual love and respect, the ability to compromise and communicate effectively, plus some patience, understanding of the other persons needs plus that of the relationship, and being tolerant, not hostile, during bumpy roads along the way. It's standing together as a team, through the good and bad times. But love is never cruel or abusive, but warm and tender.