If your child has a particular relationship or independence goal, you can use this to motivate them to build their social skills and independence. You can work together to come up with a plan to achieve their goal.
For example, if your child says that they want to find a boyfriend but they struggle with maintaining good personal hygiene and dislike meeting new people, it will realistically be difficult for them to find a boyfriend. Instead, you could motivate them to improve their hygiene and conversational skills to maximise their chances of finding a boyfriend. If your child does not show an interest in these things, social skills and independent living skills should still be taught proactively to empower your child to be able to have healthy relationships in the future and be as independent as possible.