If you are content with eating at restaurants alone, going to movies by yourself and spending Friday nights cuddled up with your dog, then you might be a bit too comfortable with being single. You're embracing the single life and that's great, but if you want to be in a relationship, sometimes there are certain things you should do make some effort.
If you've been single for a while it's easy to become very independent and comfortable in your singleness. You don't need a partner and that's great, no one wants to be in a relationship with someone who is needy; but it's also kinda nice to be needed sometimes.
It's great to be independent and comfortable with who you are but if you want a relationship you might have to give some of that freedom and independence up to make a life that includes the person you love. It has to work for both of you, that's what compromise is about and if you're with the right person then there will be good for both of you.